The 8 Best Water Bottles of 2024 (2024)

Best Overall Water Bottle


Hydro Flask Wide Mouth with Straw


85

OVERALL
SCORE

  • Closure9.0

  • Insulation8.0

  • Taste8.0

  • Ergonomics9.0

  • Material Quality9.0

REASONS TO BUY

Well insulated

Comfortable carry loop

Flip-up straw

Quality construction

REASONS TO AVOID

Low volume

Expensive

Plastic straw

SPECIFICATIONS

Measured Empty Weight 12.8 oz
Body Material Stainless steel
Volume 24 oz
Bottle Weight / Fluid Capacity 0.5 oz/oz
Mouth Diameter 1.9 in

The Hydro Flask Wide Mouth with Straw takes home the award for our favorite everyday water bottle, scoring high marks across the board in our test metrics. It's impressively well-insulated, and water stayed cool even when the bottle's exterior was warm. It has one of the best feature sets of any bottle in our review. Jon Oleson, one of our testers for this bottle, states that the open mouth and simple construction make it “easy to fill and clean”. We love the easy breezy flip-up straw cap. And with a comfortable finger carry loop, you barely need to lift a finger to tote it around.

Our main issue with the Hydro Flask is the fairly low volume capacity. If you drink a lot of water, this 24 oz model may be a bit limiting, which can become problematic on longer hikes or days out on the lake. Another minor drawback is that the straw is plastic. We could taste the plastic when we filled the bottle with hot water, so it lost a couple points in our taste test. Otherwise, it performed terrifically during all of our testing. We loved toting it around town and even on day outings, but you'll probably select something more voluminous and lighter for backcountry travel. If insulation and taste are a higher priority for you, the Klean Kanteen TKWide Recycled Insulated scored higher in those two metrics and just a point behind the Hydro Flask overall.

Read more: Hydro Flask Wide Mouth with Straw review


Best Bang for Buck


Iron Flask Insulated


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82

OVERALL
SCORE

  • Closure9.0

  • Insulation7.0

  • Taste8.0

  • Ergonomics9.0

  • Material Quality8.0


REASONS TO BUY

Attractive finish

Lightweight

Carry handle with carabiner clip

Affordable

REASONS TO AVOID

Not dishwasher safe

Plastic straw

Mediocre insulation

SPECIFICATIONS

Measured Empty Weight 10.9 oz
Body Material 18/8 Stainless steel
Volume 22 oz
Bottle Weight / Fluid Capacity 0.5 oz/oz
Mouth Diameter 2 in

If you're looking for a bottle that stands out aesthetically, look no further than the Iron Flask Insulated bottle. The attractive designs and glossy finish make for a flashy walk down the runway (or trail). “At first glance, you wouldn't think that this is the budget option,” says our tester. The durable plastic cap has an ergonomic carry handle with a carabiner-like clip, making it easy to lug around. The flip-up straw design on the lid makes for quick and easy sips that we found promoted our hydration. Overall we were happy to carry this bottle around, especially considering how cool it looks. It's also nearly half the price of similar insulated bottles.

One downside of the Iron Flask is the plastic straw. We noticed we could slightly taste the plastic when our water got warm. The straw attaches to the cap via a silicon receptacle, which we also found as a potential weak point for wear. Unless you want the color to fade, you must hand wash this bottle due to the finish. This bottle was one of the lightest weight insulated models we tested, but the thinner materials also resulted in the lowest insulation in that category. All things considered, this water bottle is a terrific deal and performs well in the daily grind or at the gym. However, for longer treks in the bush where this bottle could take a beating, we found ourselves reaching for one of the more durable and less flashy bottles. If insulation is a higher priority for you, the Owala FreeSip Insulated performed better in this metric and only cost a few dollars more.

Read more: Iron Flask Insulated review


Best Glass Bottle


Purifyou Premium Glass


76

OVERALL
SCORE

  • Closure7.0

  • Insulation6.0

  • Taste9.0

  • Ergonomics9.0

  • Material Quality7.0


REASONS TO AVOID

Small mouth

Non-insulated

Not a great outdoors bottle

SPECIFICATIONS

Measured Empty Weight 15.7 oz
Body Material Borosilicate glass
Volume 22 oz
Bottle Weight / Fluid Capacity 0.7 oz/oz
Mouth Diameter 1.125 in

If glass is your preference, then you'll want to check out the Purifyou Premium bottle. The thick glass has a rounded lip that's satisfying and almost sensual to sip, making drinking from it a very pleasurable experience. The premium glass cleans well and doesn't hold onto flavors. It's apparent that there's no chemical leaching because the water tastes just as clean from this vessel when it's warm as when it's fresh. The protective rubber sleeve makes it slightly more whoopsie-proof, and it comes in a variety of colors (including glow-in-the-dark), although it is still glass, so don't push your luck. The cap threads are well made, and it spins open with a satisfyingly smooth whirl and clamps down tight due to a rubber gasket under the lid. It also sports an ergonomic finger loop that makes it easy to carry in hand.

The biggest disadvantage is the small mouth, which makes cleaning more challenging. Therefore, we recommend investing in a good bottle brush (Purifyou sells them on their website). Keep in mind this model is not insulated, so you'll want to keep it out of the sun if you want your water to stay cool. The water inside this vessel reached up to 110 degrees Fahrenheit (at 81F ambient temperature) in our 6-hour sunbaked bottle insulation test. Also, did we mention that it's glass? Because that means you'll have to be more careful with how you handle it than other, more durable plastic and metal models. The Purifyou is best for folks seeking an alternative to plastic and it serves as a great indoor water bottle for the office. This water bottle dramatically outscored the Lifefactory Glass Active Cap, the other main glass contender we reviewed.

Read more: Purifyou Premium review


Best Filter Bottle


Brita Stainless Steel Filter Bottle


73

OVERALL
SCORE

  • Closure9.0

  • Insulation9.0

  • Taste3.0

  • Ergonomics8.0

  • Material Quality8.0


REASONS TO BUY

Sleek shape

Leakproof flip cap

Inexpensive

REASONS TO AVOID

Doesn't filter biology

Low volume

Lacks versatility

SPECIFICATIONS

Measured Empty Weight 14.2 oz
Body Material 18/8 Stainless steel
Volume 20 oz
Bottle Weight / Fluid Capacity 0.7 oz/oz
Mouth Diameter 1.75 in

For the second year running, this bottle takes the best filter prize. The Brita Stainless Steel Filter Bottle is sleek, leakproof, and very well-insulated. There are multiple color options, and the design of the lid makes it easy to clean. The silicone bite straw is a nice shape and texture that feeds oral fixation. The flip cap is the most effective and functional of any bottle with this feature. It's lightweight and light on the wallet compared to others in the category. Before testing, we didn't even realize how useful a filter bottle could be to everyday life.

The two main issues with the Brita are its size and lack of versatility. The 20 ounces of water goes fast if you're big on hydrating like us, though this bottle is also available in 32-ounce. Since it's a filter bottle, we hesitated to put any flavoring into it to avoid contaminating the filter. Another noteworthy consideration is that the charcoal filter in this bottle doesn't remove bacteria, viruses, protozoa, or heavy metals. Instead, it merely reduces chlorine and particulate matter. So, this is a great bottle to use at the gym, work, or any place with municipal (treated) water to remove the chemical taste.

Read more: Brita Stainless Steel Filter Bottle review


Best Backpacking Bottle


Nalgene Wide-Mouth


66

OVERALL
SCORE

  • Closure6.0

  • Insulation6.0

  • Taste8.0

  • Ergonomics7.0

  • Material Quality5.0

REASONS TO BUY

Recycled material

Wide mouth

Very lightweight

Inexpensive

REASONS TO AVOID

Non-insulated

Simple

Doesn't fit in cup holders

SPECIFICATIONS

Measured Empty Weight 6.25 oz
Body Material Tritan Renew copolyester
Volume 32 oz
Bottle Weight / Fluid Capacity 0.2 oz/oz
Mouth Diameter 2.5 in

Much like grandma's Buick, the Nalgene Wide-Mouth is a classic. And just like grandma's Buick, it's big and clunky without many bells and whistles. Yet, unlike grandma's boat, the bottle that many of us grew up lugging around in the backcountry has been up upgraded with some environmental considerations. The new Nalgenes are made from 50% recycled material. You get the same lightweight, wide-mouth container that holds hot and cold liquids without holding onto the flavors (mostly) for the same value, and you can walk around enjoying the great outdoors knowing that you're doing your small part to help reduce, reuse, and recycle.

What the Nalgene won't do is keep your cold liquids cold or your hot liquids hot for very long. There's absolutely no insulation on these bottles. The container is nearly shatter-proof, but it's not very thick. Neither does it have a fancy straw, rubber gaskets, or a flip-up spout. It's a simple (recycled) plastic container with a simple plastic lid. All container and no frills. However, if you need a versatile, lightweight container to lug around liquid on your next backpacking adventure, definitely consider this bottle (or two for the price!). If you want a better option for ultralight backpacking, it's hard to beat a 1-liter wide-mouth soda or sports drink bottle for the weight and price. But on those hot days when your bottle is basking in the sun, consider bringing an insulated model along for the adventure like the lightweight Iron Flask Insulated. As a bonus, it includes a built-in straw.

Read more: Nalgene Wide-Mouth review


Best Bike Bottle


Speedfil Speedflask


82

OVERALL
SCORE

  • Closure7.0

  • Insulation8.0

  • Taste9.0

  • Ergonomics9.0

  • Material Quality8.0

REASONS TO BUY

Durable

Well-insulated

Quality materials

Quick-flip cap

REASONS TO AVOID

Heavier than plastic

Expensive

SPECIFICATIONS

Measured Empty Weight 11.4 oz
Body Material 18/8 Stainless steel
Volume 21 oz
Bottle Weight / Fluid Capacity 0.5 oz/oz
Mouth Diameter 2.1 in

Plastic is certainly the convention when it comes to bike bottles. The Speedfil Speedflask opened our mind to the benefits of metal. Firstly, it retains cool liquids for much longer than plastic bottles. The stainless steel construction lends to durability and longevity. We were also impressed by the one-handed functionality of the push-button flip cap. Once open, the mouth is a spout, so it's easy to quickly hydrate and stow. There's also a sleek and convenient carry handle that clips down and out of the way when not in use.

With the heavier materials, a strength of the Speedfil may also be a weakness if you're counting ounces. Your average rider may not notice, but an avid racer might want to reduce weight. The quality materials also cost more money. Although, for as long as this bottle lasts, you may cycle through a few plastic ones. While the push button flip cap is nice for quick hydration, it also produced some leakage in our lid test. This likely isn't an issue when taking turns on the trail, but this wouldn't be our first choice to throw into a daypack making it less versatile than other leakproof bike bottles. That being said, the quality of materials, superior insulation, and ease of use make this our first choice for our two-wheeled adventures. If weight is super important and you want a more traditional bike water bottle, check out the CamelBak Podium Dirt.

Read more: Speedfil Speedflask review


Best Collapsible Filter Bottle For Hiking and Biking


LifeStraw Peak Squeeze


Weight: 3.8 oz | Body Material: BPA Free, FDA approved plastics

REASONS TO BUY

Great compact design

Light and more durable than competitors

Many options for filtration

Great filter life

REASONS TO AVOID

Maintenance required on the filter

If you are hiking or biking and want the lightest and fastest way to filter water, check out the LifeStraw Peak Squeeze. It is the top-scoring filter bottle from our best backpacking water filter review. It weighs less than a smartphone and fits in a pocket, making it a great emergency option if you run out of water but come across a stream. It takes only a few seconds to unscrew the cap, fill it with water, re-screw the cap, and be able to start drinking. We tested it while biking and loved the ability to refill our bike water bottles quickly, take a few swigs, fold up the bottle, and throw it in a pocket. You can also drink directly from streams with the filter cap. While technically using water tablets like the Aquamira Water Treatment Drops is an even less expensive option, it takes a lot more time to use the drops and changes the taste. The convenience of the LifeStraw is hard to beat. It massively improves the original LifeStraw design from a decade ago, mainly intended to drink from streams. This newer LifeStraw design gives you way more options for drinking and transporting stream or lake water.

Note that this is not an everyday water filter like the Britta. The bottle does not stand independently, and the filter is not intended for high-volume use. Replacing the filter is expensive. While the filter needs less maintenance than the Katadyn BeFree 0.6L, it still requires maintenance. Note that the BeFree bladder frequently sprung micro leaks on the bladder wall. We did not experience this as much with the LifeStraw. Overall, if you hike, backpack, or bike and want to save weight and be able to drink from streams quickly, this is the best filter bottle option we have tested.

Read more: LifeStraw Peak Squeeze review


Best Hydration Bladder for Hiking


Gregory 3D Hydro


Measured weight of 3L size: 7.1 oz | Body materials: Metallocene PE Film (BPA & PVC Free)

REASONS TO BUY

High-quality, durable construction

Great handle for a spill-free fill

Drying hanger attachment

Slides into most packs easily

REASONS TO AVOID

When empty, bulky to store

Difficult to clean

SPECIFICATIONS

Bladder Capacity Options (liters) 3 L
Weight of Bladder & Tube (oz) 7.1 oz (3L)
Dishwasher Friendly? No
Plastic Taste No
Bite Valve Push-button on/off valve

Should you take a water bottle or hydration bladder when hiking or biking? Bladders are faster to drink from but take longer to clean, fill, and fit into your pack. Bottles usually also have better taste. If you find a hydration bladder is a good fit for your activities, it's hard to beat the Gregory 3D Hydro. It is the top-scorer in our hydration bladder review for its convenient and durable design. Most bladders are floppy and easy to spill while filling. The 3D Hydro uses a strong plastic support that makes it easy to maneuver and put in your pack. It also has convenient quick releases and a drying hanger to make cleaning easier. The magnet next to the bite valve securely attaches to a magnetic backpack strap. If your pack doesn't include a magnetic attachment, no worries — the latest version of this reservoir includes a magnet accessory to attach to your sternum strap.

The main downside to all bladders, including this one, is the time it takes to clean. Unlike a standard water bottle, you can't just unscrew a lid and throw it in the dishwasher. Instead, you must disassemble parts and use scrubber brushes to hand clean. It is especially important to clean your bladder often if you use sports drinks, sugared juice, or water. In addition, the same rigid frame design makes this bladder bulky to store when not in use. Still, it's hard to beat the Gregory 3D Hydro if a hydration bladder is what you're looking for. If you want an even lighter and less expensive bladder, check out the Platypus Hoser.

Read more: Gregory 3D Hydro review


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How We Test Water Bottles


We've tested nearly 80 individual bottles since 2015. We keep a constant eye on the market for new and innovative designs and have seen many trends come and go over the years. First and foremost, it's essential that these products are easy to use, and we rated our ergonomics metric on factors like carrying handles, ease of filling and cleaning, and whether they fit in a car cup holder. To ensure we got plenty of varied input, we also passed these bottles around to our friends and family. Water bottles are as much about personal preference as holding water. We filled them with hot water and let them sit to determine whether or not materials leach to impart undesirable flavor (think of a water bottle left in a hot car). We filled them with blue-dyed water and left them on their sides on clean sheets of paper overnight to look for any signs of leakage. We examined all of their compositions and moving parts to determine their weak points and their strengths. We combined this feedback and field testing with some objective tests to provide you with extensive information so your next water bottle purchase can be well-informed.

Our water bottle testing is divided across five rating metrics:

  • Closure (25% of overall score weighting)
  • Insulation (25% weighting)
  • Taste (25% weighting)
  • Ergonomics (15% weighting)
  • Material Quality (10% weighting)

Why Trust GearLab


Everyone drinks water, but not everyone takes hydration as seriously as our lead bottle testers, Jon Oleson and Jane Jackson.

Jon is constantly on the move between the garden, the crag, the trail, the river, and plane rides here or there. Whether working in the field, at the playground with his kids, or airport hopping, Jon knows that clean H20 is the foundation for all life. Having the right vessel for the right situation is also important. Jon has tested these bottles over months--in the backcountry, hydrating (and sharing a bottle with) sick kids, in the garden, on road trips, and everything in between. These varied situations have allowed Jon to hone in on each bottle's strengths and weaknesses, and determine the right bottle for your specific needs.

Jane has spent months of her life drinking from and assessing the performance of the most popular bottles on the market. First and foremost, Jane is a rock climber, a hobby that forms the foundation of her life and has led her to cliffs, big walls in Yosemite, and valleys around the world. Most of the testing of these bottles took place at the crag, in boulder fields, on long hikes, or on rest days at cafes and coffee shops across the globe. These varying situations have provided excellent opportunities to test the portability, durability, ease of use, and overall performance of the water bottles seen in this review. Because she is constantly traveling, Jane rarely drinks from a traditional drinking glass in a kitchen, making her an expert at hydration on the go.

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How To Choose the Best Water Bottle for You


Here are four essential factors to consider when buying your next water bottle.

Do You Need Insulation?


Water bottles that provide insulation can help keep liquids cool or warm for longer periods of time. If you find yourself away from refill stations or outdoors in the heat for extended periods, an insulated bottle can be highly beneficial. Additionally, since insulated bottles typically use double-walled construction, they are less likely to condense and create moisture build-up on the outside. However, insulated bottles tend to be heavier and bulkier, which means they're not ideal for trips where you're trying to decrease weight, and they may be harder to carry around in a backpack or purse.

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What Size Do You Need?


Choosing an appropriate bottle size can feel more challenging than it should be. After all, hydration is an essential part of our daily routine, but a too-big bottle can sometimes be inconvenient and take up a lot of space. Too small, and you may end up thirsty. Identifying what type of activities you partake in and your hydration goals should be the first thought when choosing a size. Many people have more than one water bottle for use during different occasions.

What Cap Style is Best?


Different closures offer different drinking characteristics and various levels of leak protection. Screw-on caps are often less likely to leak and provide peace of mind while in your bag or stowed away. One downside is that it can be more annoying to access your drink while doing activities such as exercising or driving. A flip-top style cap will provide easier access in those situations but is more prone to leakage if not positioned upright. Choosing your closure style based on your intended use during activities and by identifying how often your bottle will be stored in different orientations.

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How To Choose A Material


Water bottles come in an array of different materials, such as metal, plastic, glass, and even silicone. Stainless steel is favored for its durability, but these bottles can weigh more than their plastic counterparts. Plastic is great for packability and weight savings during hikes or adventures but is prone to affecting water taste and potential punctures. A glass bottle will preserve taste better and make cleaning a breeze, but it is also prone to breaking and has obvious weight disadvantages. Prioritizing preferences such as taste, durability, and cleaning are great starting points to narrow down material choices for your next bottle.

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Analysis and Test Results


We used five different rating metrics to assess each bottle in this review. Although the type of bottle (e.g., filter bottle, insulated bottle, bike bottle, etc.) separated them somewhat into categories, the overall review objectively compares bottles of all different types side-by-side. That said, use your discretion when reading this review. A stainless-steel bottle will be more durable than a glass one, while the most insulated bottle may not necessarily be the best fit for your next backcountry adventure. Determine your own specific lifestyle needs as you read about each bottle's unique characteristics.

Today, some of the most popular options seem to be stainless steel bottles, including vacuum insulated and uninsulated. Next, there are the classic plastic bottles, all of which are made from BPA-free plastics. We tested collapsible and glass bottles, as well as bottles offering different methods of filtration. Each bottle has its intended use(s) — and we discuss which situations work best for each bottle in the individual gear reviews.


What's the Best Value?


Many like to consider cost alongside performance no matter what your specific needs. We focus on performance when we score products, and we appreciate a good deal as much as anyone else. The price gap of water bottles can be vast; stainless steel and glass bottles will typically cost the most. That said, over the past few years, we have seen a growing selection of affordable bottles made of these materials.

This year, the Iron Flask Insulated takes the prize as our go-to in terms of value, though the Nalgene Wide-Mouth remains a top consideration as well. The Iron Flask is attractive and lightweight, plus its straw-style lid promotes hydration more readily than a standard wide mouth. That said, if you aren't a fan of a straw-style lid, the Nalgene's simple and classic design is a time-tested favorite for a reason. Another decent option in terms of price is the Camelbak Chute Mag Renew, which is a simple, lightweight plastic bottle with a twist-off spout.

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A great value option if you do not want plastic is the Lifefactory Glass Active Cap. This bottle is the most affordable glass option in our lineup and features a pop-up flip cap with a rubber bubble seal. The Brita Stainless Steel Filter Bottle is an award-winning option most suitable for professional settings and is the most inexpensive of the filter bottles.

There are many reasons to get a reusable water bottle. Some will cite health reasons, and the National Institute of Health cites that an average liter water in a plastic bottle contains an average of 240,000 tiny pieces of plastic, 90% of which are nanoplastics. Interested in the environmental value of long-term over single-use water bottles? Sip on this — when the National Park Service banned the sale of single-use plastic water bottles in just 19 parks, they eliminated the purchase of up to 111,743 pounds of PET (plastic), prevented the emission of up to 141 metric tons of carbon dioxide, and saved up to 419 cubic yards of landfill space per year. The report is available online. Unfortunately, this ban on plastic water bottles was rescinded in 2017.


Closure


This test was broken into two parts—one objective and one subjective. The first, which was the bulk of the score in this category, was the “leakproof test.” That is, how much the water bottle leaked when left on its side with the lid closed. We filled each water bottle, added a few drops of blue food coloring, closed the lid tight, and left it tipped over on a clean white sheet of paper for a night and a day. With some, it was apparent that they failed after the night was through. Others leaked after the room in which they were sitting heated up for the day, building up pressure in the bottle. There were also observations in the field. For example, one particular bottle passed the controlled test with flying colors but then leaked its contents into our bag and ruined two headlamps.

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The second part of this test was how easy the closure, whether it be lid, straw, or cap, was to use. Could it be operated one-handed, or did it take two hands? Was it quick and easy to flip up the straw and hydrate, or was the process more involved? The highest scores were given to the bottles that allowed for the quickest and easiest hydration.


Some bottles were really close on this test. Two of our highest-scoring bottles, the Hydro Flask Wide Mouth with Straw and Iron Flask Insulated, were hard to tell apart in this regard. Both retained all their liquid on the leakproof test, and their flip-up straws were easily operated with one hand. In fact, the Hydro Flask became the kids' favorite because it was so easy to operate, and they liked the color. The Brita Stainless Steel Filter Bottle bottle was also extremely easy to operate one-handed, simply with the push of a button. The Speedflask also has an easy push-button flip cap but was taken down a notch because it did not prove to be leakproof during that portion of the test.

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The majority of contenders contained their contents during the leakproof test, but not all were as quick or easy to operate and thus did not score as highly. The Owala Freesip has a clip over a push button flip cap, which is great for guaranteeing that the flip cap stays closed, and we found it to be a bit cumbersome. The Yeti Rambler, Purifyou Premium, LARQ Bottle PureVis, and Camelbak Podium Dirt all retained their liquids, and all require two hands and an amount of twisting to take off the cap and sip. Despite the extra twisting, all these bottles have their specific features and uses, so it's good to note that they won't leak on you.

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There were those bottles that were quick to hydrate but didn't pass the leakproof test, like the aforementioned Speedflask. The Lifefactory Glass Active Cap is super easy to flip and chug, yet emptied almost all the bottle's contents during the course of the leak test. One of the highest scoring bottles in many other regards—the Klean Kanteen TKWide --is quick to hydrate with a two-handed half twist, but it leaked a decent amount during controlled testing (although none was noticed during field testing). If you're planning on mindlessly tossing your bottle into your pack, you may want to consider one of the more leakproof options mentioned above.

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Lastly, there were what we would classify as the “backpacking bottles” that both produced a bit of leakage on this test. The Nalgene Wide-Mouth leaked just a bit on the leakproof test, and the gasket-less lid is the classic twist on/off type. The Grayl GeoPress Water Filter and Purifier has two chambers—the bottom one you fill with unfiltered water, which is then pressed into the upper, filtered chamber. The upper chamber has a tight-fitting lid and screw cap with gaskets, which do not leak. We found that the lower chamber does leak, however, and not all the water presses into the upper chamber. This is an inherent design flaw in this otherwise very useful filter press that we were happy to have with us on several occasions despite the added weight.

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Insulation


When you fill your water bottle with cold water on a hot day, you probably want it to stay cold. In this test, we measured the insulative quality of the bottles under the hot California sun during midday. Each bottle was filled with cool water from the tap and then set on the grass in the sun. We measured the water temperature inside the bottles every 30 minutes for 6 hours.


There was quite a disparity between the insulated and the non-insulated bottles. The insulated bottles saw a modest temperature increase, while some of the non-insulated contenders reached temperatures 40 degrees above the ambient air temperature. We also saw a decent range among the insulated bottles. The quality and thickness of materials, as well as design and construction, seem to make a big difference in insulative quality.

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In the insulated bottle category, the Klean Kanteen TKWide, Brita Stainless Steel Filter Bottle, and Owala FreeSip showed to be the most insulative. These were closely followed by the Hydroflask Wide Mouth with Straw,Yeti Rambler, and the Speedfil Speedflask. Any of these bottles would be good options to preserve ice on a hot day.

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The Brita Stainless Steel Filter Bottle and Klean Kanteen TKWide were neck and neck for most of the test. Over the six hours, the Brita's water temperature rose just 8.5 degrees F. The Klean Kanteen's rose just 9.4 F. This is quite impressive considering they were both in full sun on an 80-degree F summer day.

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If you're in the market for a plastic bottle, then you'll be interested to know that the water inside each of the plastic bottles reached over 100 F during the test, with the exception of the Camelbak Podium Dirt bike bottle (which reached 96.8 F). This highlights the fact that if you're toting plastic, then it's best to keep it out of the sun. At least you can rest assured that companies are taking environmental health into consideration and making plastic bottles out of materials that don't leach BPA, BPS, BPF, phthalates, and other known carcinogens into your water.

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There was a slight difference between the glass bottles in terms of insulative quality. Our top pick for glass bottles, the Purifyou Premium, got up to 110 degrees F! While the Lifefactory Glass Active Cap only reached 95 F. Either one is still hot when you go for a cool sip, but 15 degrees is a noticeable gap. As with plastic bottles, it's best to keep the glass out of the sun if you want your water to stay cool.

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If you're in the market for a collapsible bottle, our testing has shown that these styles are some of the worst at insulating under direct sun exposure. The 17 oz Hydrapak Stow reached a sweltering 123 degrees F.

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Taste


It's essential to stay hydrated, and you're probably more likely to do so if the water you're drinking tastes good. No one likes to go for a warm bottle of water and taste the plastic. Yuck! Chemical leaching. In this test, we filled the bottles with 100-degree water and let them sit to simulate a bottle left in a warm car. We then tasted the water from each bottle to determine which ones did or did not impart taste.

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Our main reviewer is really sensitive to plastic taste and smell, so we were able to hone in on not just the differentiation but also the elements that contributed to the difference. The highest scorers in this category were the bottles that had no plastic touching the water. These were generally metal containers without plastic straws and the glass bottles. The Klean Kanteen TKWide was the only container with a straw that did not impart a plastic taste because its straw is also stainless steel. The top-scoring metal bottles with plastic straws, like the Hydro Flask Wide Mouth with Straw and the Iron Flask Insulated, only imparted the slightest plastic taste—perhaps not enough for most people to notice, especially if you're drinking cold water from them.

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The glass bottles and metal vessels without straws all scored very highly, with a clean, chemical-free taste. Any one of these bottles—the Purifyou Premium, Speedfil Speedflask, Lifefactory Active Cap, LARQ PureVis, or the Yeti Rambler—is a good choice if your only focus is clean-tasting water.

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As far as the filter bottles go, we were a bit surprised by the results. The big hunk of plastic, the Grayl GeoPress, actually produced a fairly clean-tasting mouthful of water. The durable, food-grade plastic in this bottle really stood up to heat. The Brita Stainless Steel Filter Bottle, which is our top choice for filter bottle, scored the lowest on this test. The straw seems to be made of a cheaper type of plastic, and the filter does not do enough to remove that particular chemical taste (although we did find this bottle to be effective at removing chlorine from municipal sources). If you're going to purchase the Brita, we recommend doing your best not to leave it in the hot car if you want your water to taste good.

The plastic bottles scored the lowest on this test, most of them imparting some degree of chemical taste. An outlier was the classic Nalgene Wide Mouth, which imparts surprisingly little taste to a bottle of hot water and is also surprisingly resistant to flavors. This may be due to the recycled Tritan Renew copolyester from which it's made. We found that the bottles made from silicone, polypropylene, and polyurethane imparted the most chemical flavor. If you absolutely need a collapsible bottle, all we can say is don't leave it in the sun.

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Ergonomics


In this test, we evaluated the qualities of each bottle to determine the contenders who were the most efficient and easy to use. Elements that contributed to higher scores were carrying loops/straps/handles, flip or straw caps, and designs that allowed for easier grip or carry. The top-scoring bottles in this category combine all these elements into a bottle that makes it all around easy to stay hydrated.

The champions of this test were bottles that were easy to carry, allowing for quick hydration, and even fit in our cup holders. The Iron Flask Insulated stood out, with an easy-to-grip carry handle with a carabiner clip and a flip-up straw. Our Editors' Choice, the Hydro Flask Wide Mouth with Straw, is also a sleek flip straw bottle with a comfortable carry loop that makes it easy to tote around.

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The Speedfil Speedflask earned a high score here due to its slender waist and push button flip cap with a finger carry handle that clips down to stay out of the way when not in use. It's super easy to grip it, flip it, and chug as much as you need. The Brita Stainless Steel Filter Bottle also has a push button flip cap with a satisfyingly squishy silicone bite straw, a soft and comfortable two-finger carry loop, and will fit in your cup holder. Our top glass bottle, the Purifyou Premium, has a relatively slim design (although it doesn't fit in most cup holders) and a silicone sleeve that makes it easy to grab. The large-threaded cap whirls smoothly on and off and has a super comfortable finger carry loop.

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The low scorers in this category had elements that made them more difficult to carry, grip, or use. The Grayl GeoPress, although superior at filtering, is big and clunky and requires a lot of body weight to press the filter. The Nalgene Wide Mouth is likewise more difficult to grip, and although the lid has a plastic loop that attaches it to the bottle, it's hard, edgy, and sharp and not comfortable to carry over time. The LARQ PureVis is a slick powder-coated bottle with a small twist-off lid and no clips or carrying features. The Yeti Rambler has a nice carry handle on the lid but is big and bulky. If you're looking for something super simple to lug around town, then you'll want to avoid these bottles.


Material Quality


For this metric, we delve into the quality of the material of each water bottle. How well are the bottles constructed? Will they hold up to use and abuse? How likely are they to break? While we didn't intentionally try to break the bottles on this test, we did put them to good use. We noted the points of wear and the places where they were likely to wear out. Objectively, scores were determined by the construction and quality of the materials.

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In terms of caps, there are several factors that determine quality. Is it made of hard plastic or soft plastic? Are there rubber gaskets to seal the contents? Do the moving parts have weak joints or points? The highest scoring bottles, like the Iron Flask Insulated, Hydro Flask Wide Mouth with Straw, and the Klean Kanteen TKWide, all had hard plastic lids with rubber gaskets that produced a tight seal. Some bottles went a step further, like the Purifyou Premium glass bottle, with its rubber gasket and metal plug to ensure that your water doesn't touch plastic.

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Vessel quality was determined by the type and thickness of the material. Glass is preferred for purity of contents, but metal is preferred for durability. Plastic received a lower score overall due to its tendency to leach chemicals. Double-walled metal containers all scored well. Bottles like the Klean Kanteen, Hydro Flask Wide Mouth, and Owala Freesip were made of thick stainless steel and will take some abuse before they show any wear. Other stainless steel bottles, like the Iron Flask Insulated, received a slightly lower score due to thinner material construction resulting in slightly less durability.

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Lastly, we considered any feature that added to longevity or durability and, conversely, docked points for any feature that would wear more quickly. For example, the Klean Kanteen TKWide got points for being the only straw-type bottle with a stainless steel straw. The Speedfil Speedflask lost some points because the flip cap's mechanism is a rubber band, which is definitely a weak point on an otherwise well-constructed and durable bottle. Likewise, we noticed a crease on the plastic cap of the Camelbak Chute Mag which is a weak point and likely to wear over time.

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Conclusion


We've run the gamut with our water bottle testing over the years. In such a simple category, we've found a surprisingly large performance gap. Unfortunately, there is not one bottle that serves all the purposes. However, we can help steer you toward the ideal model for your specific needs. Models for long hikes, bike rides, or climbing trips will differ from the bottles used at work or taken to the gym. We hope this review helps you find the one(s) that best suits your hydration needs wherever you go.

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