The world's most in-depth and scientific reviews of outdoor gear

The Best Water Bottles for Hiking and Outdoors

By Jane Jackson ⋅ Senior Review Editor
Tuesday May 8, 2018
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Just as the spring snowmelt provides a steady flow of water coming from the high mountains, there is also a steady flow of new water bottles flooding the market season after season. We waded through hundreds of options online and narrowed it down to the top 20 bottles. We have organized this review based on the material used in the bottles' construction — ranging from glass to plastic to stainless steel. We have also tested out collapsible bottles and bottles with built-in filters. From long hikes to multi-pitch climbs to days at the office, our testers have learned a lot about what separates a decent bottle from a fantastic one. We have dropped these bottles, filled them with coffee, cleaned them out, and carried them in hand. These side-by-side tests are meant to help you settle on the perfect bottle to fit your lifestyle.

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Updated May 2018
We just added in five new bottles and have a new Editors' Choice by Yeti. Most of the new additions were innovative but did not warrant awards or high scores. The exception was the DuoLock, an innovative collapsible bottle. We now have six award winners to suit on your activity and budget.

Overall Top Choice

YETI Rambler 26

Yeti Ramber 26
Editors' Choice Award

at Amazon
See It

Weight: 18.5 oz | Body Material: 8/18 stainless steel
Great insulator for both hot and cold drinks
Ergonomic handle
Easy to clean
Very durable
Minimal flavor retention
Wide mouth design is easy to drink from

The Rambler beats our longstanding favorite, the HydroFlask Vacuum Insulated. This bottle has it all — a sleek, thoughtful design, great insulation, as well as a few additional touches that make this contender outstanding. The wide mouth design makes the Rambler easy to clean and especially easy to drink from. That annoying feeling of having the rim of a bottle pressed against the top of your nose is a distant memory with the Rambler. This bottle drinks like a drinking glass from your grandmother's kitchen.

Though there are many, many positives to the Yeti Rambler, there are also a few downsides to this bottle. Since it is insulated and made of stainless steel, it is not the lightest bottle in the fleet. That said, we still found ourselves reaching for the Yeti for long hikes and days at the crag, regardless of its extra weight. The bottle is also expensive, which is a bit of a downside. But, it is a good investment, as the Yeti is one of the most durable bottles in this review, and has a very good warranty. Read the complete review to learn more about why we loved the Yeti Rambler.

Read review: Yeti Rambler 26

Budget Friendly Winner

Nalgene Wide-Mouth

Nalgene Wide-Mouth Loop-Top
Best Buy Award

at Amazon
See It

Weight: 6.25 oz | Body Material: Eastman Tritan co-polyester
Does not impart flavor (to an extent)
Very light, yet durable
Simple design
Easy to fill
Large for standard cupholders
Wide mouth causes spillage

For the best option for very little cash, look no further than the Nalgene Wide-Mouth. It is an added bonus that this bottle is also the top scoring for plastic bottles. This simple, iconic bottle has been a staple of the outdoor world for years, and for good reason. The Nalgene is durable, lightweight, and easy to clean, and is a useful measuring tool when you're in the backcountry with the graduations labeled on the side.

Also, because Nalgene has been around for so long, many water bottle accessories (i.e. water filters, insulators, and backpack bottle sleeves) have been made to fit the Nalgene's particular mouth size and shape. This award winner deserves its popularity. If you want to switch up this classic bottle, the Nalgene comes in a variety of shapes, sizes, and colors.

Read review: Nalgene Wide-Mouth

Top Pick for Lightweight Stainless

Miir Slate 27

Miir Slate 27
Top Pick Award

at Amazon
See It

Weight: 6.6 oz | Body Material: Medical grade stainless steel
Good value
Thoughtful lid design
Paint chipped after a few uses
Lacks durability

The Miir Slate 27oz stood out as a new contender in the lightweight stainless-steel category. In the past, Klean Kanteen and Hydro Flask have dominated this category, but this contender proved to be tough competition. If a heavy-duty vacuum insulated water bottle is too much, then these lighter weight plastic alternatives are the way to go. This model is lighter and more durable than glass and cleaner than the friendliest BPA free plastic models on the market.

It weighs less than the Klean Kanteen Classic and has a unique lid design that makes the bottle easy to carry and the lid easy to remove. It was lightweight, portable and versatile. Its simple design made the Miir 27oz the one we reached for on our way out the door.

Read Review: Miir Slate 27

Top Pick for Collapsible Bottle

Platypus DuoLock SoftBottle

Top Pick Award

(15% off)
at Backcountry
See It

Weight: 1.12 oz | Body Material: Nylon/ Polyethylene
Very packable and lightweight
Clever lid design
Sturdy carabiner attachment point
Easy to drink from
Lacks durability
Hard to clean
Flavor retention

In the collapsible category; the Platypus DuoLock outshined our longstanding favorite, the Platypus SoftBottle. As a lightweight option, the DuoLock has it all. It's easy to fill, from a shallow stream to a tiny sink, and it collapses down to the size of an empty plastic bag. Its collapsible features make it a great option for backpacking or climbing, where real estate is precious inside a backpack.

We loved the new lid design of the DuoLock which has two parts, an easy-to-use locking mechanism and a narrow drinking spout that makes this bottle much easier to use than its predecessor. The Platypus has trouble standing up on a flat surface, but it is better suited for the dirt and rocks anyway. It's difficult to clean since it has such a narrow mouth, but at only $14, it's hard to expect the Platypus to last that long anyway.

Read review: Platypus DuoLock SoftBottle

For Long Hikes and Backpacking (Built-in Filter)

Katadyn BeFree

Weight: 2.3 oz | Body Material: TPU, 100% PVC and BPA free
Straw with incorporated filter
Difficult to drink from
Small capacity

When used properly, this water bottle revolutionizes how much weight you hike, backpack or bike with. We take this on any outing of 3+ hours if we know there is a stream or lake. If you know where the water is, "be a camel" and drink a lot at each water source then carry only the amount you need to the next stream. Your daypack can weigh 2-6 pounds less throughout the day — a HUGE bonus. As a bonus, you drink water that is as cold and refreshing as the stream source. In our experience, you load up on water and stay better hydrated than carrying a full activities worth of water from the start and feeling you need to ration. For the ultimate combo, also bring the Softbottle mentioned above and refill the Plus from the BeFree.

The flip side is that the BeFree might instill overconfidence. If the stream that you're counting on doesn't materialize, you could be in trouble. The cap design is poor for one-handed operation, and you really have to close it to prevent leaks. At first, the taste is not great due to the filter — but it quickly gets better. Those few downsides aside, it's hard to overstate how much we love the BeFree. Most products just get a little better. This product might totally change how much water you have to carry and therefore your comfort on the trail.

Read review: Katadyn BeFree

Top Pick for Glass Bottle

Lifefactory Glass Flip Cap

Lifefactory Glass Flip Cap
Top Pick Award

(48% off)
at Amazon
See It

Weight: 19.2 oz | Body Material: Soda Lime Glass with Silicone Sleeve
Easy to carry
Durable silicone casing
Top scoring for flavor retention
Easy to clean
Problematic flip cap

In addition to the Soma Bottle and the tried and tested favorite, the Lifefactory Glass Flip Cap, we also checked out the new bkr bottle. Out of the three, the Lifefactory still proved to be our favorite. It is durable and practical, with different lid options if the flip cap design is not for you. The Lifefactory is small and portable, making it a great lifestyle option.

As consumers seek alternatives to plastic, glass water bottles are becoming more and more popular since they are considered to be safe from chemical leaching. The LifeFactory's narrow shape is easily carried by hand, or by the carrying handle, and it fits nicely into most cup holders. No other option provides the portability of the Lifefactory while still evoking the feeling of drinking from a glass in the kitchen. Impressively, it also passed our drop tests, due to its silicone sleeve. If cared for properly, it will last.

Read review: Lifefactory Glass Flip Cap

Analysis and Test Results

This year, we decided to break down the water bottles into categories based on the material used, except for the collapsible class, which are also plastic but perform a unique function versus your typical plastic option. This left us with four main categories: metal (stainless steel, both insulated and non-insulated in the same category), plastic (all BPA-free models), collapsible and glass. From there, we chose the top pick in each material category.

All 13 bottles lined out at the beginning of this year's testing cycle.
All 13 bottles lined out at the beginning of this year's testing cycle.

When selecting your choice, there are a few things to consider. Do I want metal, glass or plastic? A screw cap or a straw for sipping? Do I need it to regulate the temperature of my drinks for extended amounts of time? The models tested for this review hosted a variety of differences in materials, lid types, volume, insulation and even rigidity. To help you navigate the increasingly varied world, we've outlined the primary features, advantages and disadvantages of each major category.


Hover over the blue dots and see which award winners were the best value (the gray dots are non-award winners). The Nalgene is clearly the value choice as it scores third highest but is one of the least expensive bottles in the review. Two other standouts are the Miir Slate and Platypus DuoLock. Had these not won Top Pick awards, they would have been Best Buy award winners. The Slate is the best value in a metal bottle and the DuoLock is the best value in a collapsible bottle. The Lifefactory is the best value in a glass bottle.

Types of Models

Water bottles can be categorized by activity, by size and by design. However, this review is organized around the materials used in the design of these products. This is especially critical since the materials used to produce such bottles have become a topic of increasing debate. Although plastic bottles can offer advantages in weight, versatility and price, many consumers prefer metal and glass due to potential health concerns of storing liquids in plastic containers. We've highlighted the pros and cons of each type, as well as dug into the main issue concerning plastic.

The Citrus Zinger and the Camelbak Eddy both have straws for one-handed drinking; the Nalgene is the third plastic bottle we tested  shown on the right.
The Citrus Zinger and the Camelbak Eddy both have straws for one-handed drinking; the Nalgene is the third plastic bottle we tested, shown on the right.

We scored all 19 models using the results from five criteria: ease of use, taste, durability, ease of cleaning and weight. The most important area that we focused on was ease of use because that is what separates one water bottle from the next each time you use it. Besides carrying these bottles around for three months, we put them through various tests indoors. Following the chart below, we summarize how we tested within each criterion. For additional information on differentiating between the different types of bottles, consider reading over our Buying Advice article, which you'll find at the top of the review.

Ease of Use

As hydration is the main purpose, we measured how easy (or difficult) it is to fill up and drink. We also considered the likelihood of spilling when drinking, and we noted any signs of leakage. We also evaluated lid design and the ubiquitous carrying handle.

Overall, we felt that simpler was better when it came to ease of use. We found some of these bottles to have too many features and were difficult to learn how to use effectively. The Nalgene Wide Mouth and the Yeti Rambler 26, both winners in their respective categories, were our favorites due to their simplicity. The Rambler scored especially high because of its extra-wide mouth design, which allows for easy drinking.

The Miir has a narrow mouth  which is helpful for drinking  but large enough to avoid spilling and splashing when filling the bottle.
The Miir has a narrow mouth, which is helpful for drinking, but large enough to avoid spilling and splashing when filling the bottle.

In general, the wider the mouth, the easier to fill, but also the more difficult it was to drink from. Somewhat of a surprise, we really enjoyed drinking from the AVEX Brazos Autoseal Stainless. The AUTOSEAL lid mechanism works very well, allowing users to get a quick and easy gulp without unscrewing any caps; it also passed our leak test. The Klean Kanteen Vacuum Insulated also scored well here since it was simple and easy to use. The Klean Kanteen Classic scored lower because of the sport cap, which we found to be difficult to drink from. On both Klean Kanteen models, the width of the opening was wide enough for easy filling and ice cubes, but small enough to drink from without spilling.

The Classic bottle from Klean Kanteen has a mouth wide enough to fill easily  yet narrow enough to make drinking easier  too.
The Classic bottle from Klean Kanteen has a mouth wide enough to fill easily, yet narrow enough to make drinking easier, too.

The CamelBak eddy lost points here because it fails the leak test and provides only a slow flow of water. Similarly, the LifeStraw Go got downgraded here because it was difficult to suck water through the filter. The straw design on both of these bottles was quick to use but did not allow for satisfactory gulps. It's for sipping, not gulping, which we found annoying when we needed water the most (like during workouts). The Platypus DuoLock lost points since it's awkward to drink from and easy to knock over, while the Lifefactory Glass lost points because the shape of the spout sent water up our nose if we weren't careful when tipping it back to drink quickly. The carrying handle of the Contigo Thermalock was awkward to use and strangely shaped, discouraging us from using it when carrying the bottle around.


Not only do we want to hydrate, but we also want the water to taste good. Some water bottles imparted flavors on the liquids they contain, a characteristic that we did not appreciate. And if you store liquids like flavored drink mixes and coffee for a day, some bottles retain that taste and pass it on to the next thing you put in, even after washing.

For our taste metric, we combined the results from three separate tests performed on each model. First, we filled each bottle and took a drink to check for any immediate effects on taste. Second, we left them filled with water for 24 hours before taste testing them again. Finally, we filled each one with a flavored sports drink mix, left them sitting for 24 hours, emptied the bottles, and hand washed each bottle with soap and warm water. Then, we filled each with tap water, and taste tests were conducted to see if we could detect any residual flavors from the sports drink.

The offset carrying handle on the bkr makes the bottle more comfortable to carry in one hand. The bkr also scored a near perfect score for taste. Don't be fooled by the photo: it takes incredible finger strength to hold such a heavy bottle with one finger!
The offset carrying handle on the bkr makes the bottle more comfortable to carry in one hand. The bkr also scored a near perfect score for taste. Don't be fooled by the photo: it takes incredible finger strength to hold such a heavy bottle with one finger!

If your bottle is retaining flavors, soak it in a mixture of 1 tsp baking soda, 1 tsp vinegar, then fill with water. Let it sit overnight, following up in the morning with a thorough rinsing.

All glass bottles, the Lifefactory, bkr, and the Soma came out with top scores in this category. They did not impart flavors to the water and kept water relatively fresh-tasting, even in our 24-hour test. Furthermore, both bottles proved resistant to retaining flavors from other non-water liquids used to fill the bottle. None scored perfectly in this test, as the drink mix was detectable in each model. However, the effect on taste was very minimal in the glass bottles, and after cleaning them again with baking soda and vinegar, they returned to "like new" tastes.

The Avex is a great bottle for use around town. It keeps your drinks hot for hours  you can drink with one hand  and it has a sleek shape that feels nice in the hand.
The Avex is a great bottle for use around town. It keeps your drinks hot for hours, you can drink with one hand, and it has a sleek shape that feels nice in the hand.

Two plastic options, the Nalgene and AVEX Brazos, also scored well in this metric. The other plastic bottles did not fare as well here, with the two collapsible bottles, the Platypus SoftBottle and Nomader, retaining strong flavors of sports drink and even soap. The Nomader also left a rubbery taste in the water the first few times we used it. The straw of the CamelBak eddy also imparted a strong rubbery taste to the water, and retained the flavor of the sports drink rather significantly. The stainless steel models fell in the middle of the pack in these tests, neither soaring nor flailing.

The Soma Bottle's sleek size makes it a good bottle to accompany you throughout your day –   from work to the climbing gym.
The Soma Bottle's sleek size makes it a good bottle to accompany you throughout your day – from work to the climbing gym.


Durability is a major determining factor in value, especially if you're relying on only one vessel as your water source. Going from stream to stream in the backcountry, you need to know that your bottle won't break and leave you without water. Based on years of outdoor experience, the OutdoorGearLab team knows that collapsible models tend to be less durable than their rigid counterparts due to frequent stress on flex points. Meanwhile, the bodies of rigid contenders are usually very durable but often have failure points on the lids. To come up with a score in this category, we considered the type of material used for the bottle and cap. The stainless steel and rigid plastic models scored at the top of the materials test, with glass falling in the middle and collapsible bottles scoring the lowest.

Each bottle got two drop tests. We filled each with water and dropped them 3.5 feet onto a concrete surface, once on the bottom of the bottle and once on the cap. The Platypus DuoLock and Meta bottles proved that their flexible properties allow them to take a serious hit, walking away almost entirely unscathed. We did have some bottles fail the drop test.

This was our one attempt to bring the Rambler climbing. The bottle was way too heavy to clip to a harness  but worked all right when carried inside a backpack. In the future  we would recommend a different  lighter-weight bottle for vertical endeavors.
This was our one attempt to bring the Rambler climbing. The bottle was way too heavy to clip to a harness, but worked all right when carried inside a backpack. In the future, we would recommend a different, lighter-weight bottle for vertical endeavors.

The AVEX Brazos busted when its bottom hit the hard ground, while the Contigo broke when dropped on its cap. All the other bottles survived with minor cosmetic damages. The biggest surprise in our drop tests was that the bkr and Lifefactory bottles walked away intact. The silicone sleeve and plastic cap did a sufficient job of absorbing the impact force, keeping the glass from shattering. The Klean Kanteen Insulated, Nalgene Wide-Mouth, Klean Kanteen Classic, and Yeti Rambler all earned high scores in the durability metric.

Ease of Cleaning

Even the dirtiest outdoor enthusiasts wash their bottles once in a while. At least, we hope they do. In this metric, we used a standard bottle brush and timed how long it took to hand-wash each contender. Although some of these are labeled as dishwasher-safe, we decided to rate with hand-washing times for two reasons: 1) Not everyone has access to a dishwasher, especially in the great outdoors, and 2) As you read above, we do not recommend washing plastic components in the dishwasher. Lastly, we also factored in the number of parts and their complexity.

In general, the wider the mouth of the bottle, the easier it was to clean. The Yeti, Nalgene, and Hydro Flask bottles scored the highest in this category. They are all simple designs with wide mouths, allowing for quick and easy cleaning.

With the over-the-nose design  the Yeti Rambler looks more like a glass than a bottle. There are no hidden nooks and crannies in the bottom where gunk can get lodged unknowingly. The wide mouth is great for cleaning  filling and drinking from.
With the over-the-nose design, the Yeti Rambler looks more like a glass than a bottle. There are no hidden nooks and crannies in the bottom where gunk can get lodged unknowingly. The wide mouth is great for cleaning, filling and drinking from.

On the other side of the spectrum were the bottles with complex parts, including the CamelBak eddy and the Citrus Zinger. The Nomader and Platypus Softbottle proved particularly challenging to clean as well. Our bottle brush was too large to fit inside these bottles, and they required many cycles of rinsing to reduce the taste of soap left behind. We also found that dirt and other debris tended to stick to the Nomader more than other bottles due to its rubbery, soft design.

We highly recommend purchasing a bottle brush to make cleaning your bottles quicker and easier (and less frustrating!).

The beauty of the Hydro Flask is its simplicity. Its two parts  lid and body  are easy to clean  simple and sleek. The bottle is heavy  but it makes up for it in all other categories.
The beauty of the Hydro Flask is its simplicity. Its two parts, lid and body, are easy to clean, simple and sleek. The bottle is heavy, but it makes up for it in all other categories.


Although less consequential in day-to-day use, the weight of an empty bottle is a major factor when considering which to use on long hikes and multi-day backpacking trips. In this sense, a lighter bottle provides the versatility that a heavier bottle does not. When scoring in this category, we weighed the bottles using our OutdoorGearLab scale and divided by the volume to find out how heavy each bottle is per fluid ounce (oz./fluid oz.).

The Platypus SoftBottle weighs in as the lightest at only 1.2 oz. The other plastic models also scored well in this category, as did the Klean Kanteen Insulated. The insulated stainless steel models fell toward the bottom, but it was the glass bottles that came in last in this category.

We like the combination of a rigid and a collapsible bottle for multi-day backpacking treks. We prefer the rigid bottle as our primary drinking vessel and the collapsible as a backup reservoir.

Hydration Alternatives and Accessories

While we believe a water bottle to be essential to anyone's gear arsenal, it might not be all you need. There are alternatives available that perform better than bottles in certain situations, such as when moving and times when you need both hands free. For this, there are hydration bladders and hydration packs, some of which are excellent performers for specific activities. Below we've highlighted some of the uses and qualities of these alternatives.

Hydration Bladders
CamelBak Antidote Reservoir
The advantages of a hydration bladder like the Geigerrig Hydration Engine include hands-free usage and larger volumes. The bladder, a collapsible reservoir ranging from one to several liters in volume, is attached to a hose that you suck on to draw water into your mouth. On long hikes, these are easier to use for hydration than a water bottle that you have to dig out of your pack each time you need a drink. Most backpacks made today come equipped with a hole for the hydration tube, and some even have a special compartment for a bladder. The downside to hydration bladders is that they are less durable, have shorter lifespans, and are harder to clean (than bottles). And in the office, we recommend a bottle over a bladder.

Hydration Packs
Camelbak M.U.L.E.
These are great when you don't want to carry your entire backpack on your full-day hike or bike ride, yet still need to stay hydrated throughout the day. Hydration packs like the CamelBak M.U.L.E. are usually lighter than most backpacks and have proper ventilation, making them more comfortable on long days. They make drinking on the move a breeze, and their convenience helps you to stay fully hydrated. Most also feature pockets for storing additional items such as food, first aid kits, and tools. Like hydration bladders, they also are harder to clean and have shorter life spans than bottles. It's also harder to ration your water with these packs. Lastly, hydration packs cost significantly more than bottles.

Running Hydration Packs
These are designed to stay in place as your body moves while running. They often incorporate a vest design to achieve this feat and have pockets for storing food, electrolytes, and blister supplies, as well as a phone or GPS. See our complete running pack review.

Mountain Bike Hydration Packs
These packs are a great investment if you like long biking sessions. Not only do they transport large volumes of water to keep you hydrated, but they also have space for food, essential tools, and sometimes even rain gear.


We tested many water bottles in many settings and found a big performance gap. There is no "one bottle for all activities". Instead, we lay out the ideal model for each use. Models for long hikes, bike rides, or climbing trips differ from the bottles used at work or taken to the gym. That is why weight and type of material used for the bottle were the most important factors in our tests.

Jane Jackson