Water is the source of life and has been carried in portable vessels for years, but it wasn’t until hikers and outdoorsman started to use Nalgene’s lightweight and durable scientific containers to carry consumables that water bottles caught on as an everyday and outdoor item.

The Rochester, New York-based company’s own scientists used its products for camping in the Adirondacks in the 1960s, and as the conservationist movement caught on in the 1970s, Nalgene started branding its products with the label Nalgene Outdoor — the modern-day water bottle had arrived.

As the fight against single-use plastics continues, water bottles have expanded from the realm of camping and backpacking into everyday life. Today, no everyday carry kit is complete without a reusable, durable, leak-proof water bottle. Try one of these.

Our guide to the best water bottles of 2021 provides everything you need to know before buying a water bottle, highlighting the best models based on volume, insulation, durability, extra features and more.

Best Overall

MiiR Insulated Narrow Mouth Bottle

Miir’s 23-ounce insulated bottle brings a design-forward approach to the simplest type of water bottle without using gimmicks or a fancy paint job. The bottle is made from 18/8 medical-grade stainless steel and doesn’t retain flavors; there’s no metal aftertaste either. The bottle’s cap is leak-proof and uses a unique handle design that makes it easy to grab and clip to bags, unlike those of many other small-mouth bottles. The less-bulky body size means it’ll fit in a cup holder too.

Best Premium Water Bottle

Hydro Flask Wide Mouth Trail Series Bottle (32 oz.)

Insulation makes drinking from a water bottle better — returning to a hot car to find cold water is all it takes to prove it. It comes at the expense of bottle size and weight, but in creating its newest line of water bottles, Hydro Flask figured out how to reduce the load by 25 percent. The result is a water bottle, available in 24- and 32-ounce sizes, that offers the best of both worlds. It's the only water bottle we found that strikes such a balance, making it worth the higher price tag.

More volumes: 21 ounce ($40), 24 ounce ($45)

Most Affordable Water Bottle

Nalgene 32oz Wide Mouth Sustain Water Bottle

Nalgene products were first developed for use in science labs, but the company may very well be responsible for bringing everyday water bottles into modern life and helping to reduce the use of throw-away plastics. Its water bottles have been widely used for years and remained popular even as insulated vessels carve out their space. The Tritan is Nalgene’s no-frills classic; it’s a hard-sided plastic bottle with a wide mouth, plastic screw-top lid and easily-legible measurements in milliliters and ounces.

Best Non-Insulated Wide Mouth Bottle

Klean Kanteen Wide 40 oz

Klean Kanteen’s Wide Mouth Water Bottle is as fundamental as a non-plastic water bottle gets. Its body is made of stainless steel, which is flavor- and odor-resistant, easy to clean and BPA-free. Its lid is molded plastic, leak-proof, and nearly indestructible (meaning you can trust a carabiner won’t rip through it). The wide mouth can accommodate backcountry water filters too. Put a dent in it? Hammer it out and keep on drinking.

More volumes: 27 ounces ($18.22), 64 ounces ($29.30)

Best Insulated Narrow Mouth Bottle

MIZU V8 Water Bottle

Insulated water bottles are preferable for their ability to keep contents cold or hot, but adding double-walled technology can quickly make a bottle bulky, even at lower volumes. Mizu’s V8 gives the best of both worlds, with a 26-ounce capacity that betrays its size and insulating capabilities. The V8 also earns points for the availability of different lid styles, even though its standard gives the bottle a beautiful and clean aesthetic.

Best Insulated Wide Mouth Bottle

Yeti Rambler 36 Oz

Like Yeti’s coolers, its everyday water bottle, the Rambler, is an ultra-durable vessel that’ll keep a beverage cold or hot for longer than it’ll take to finish. Yeti’s double-walled insulation is constructed of high-quality 18/8 stainless steel. The leak-proof cap features a sturdy and simple handle design that has room enough for more than just a single finger, and its wide mouth means your nose won’t get in the way when your thirst calls for a chug. The Rambler comes in a variety of sizes and there's a full collection of lids to suit your preferred drinking style, all of which are interchangeable.

Best Anodized Water Bottle

Snow Peak
Snow Peak Titanium Aurora Bottle

Snow Peak is known for its functional and aesthetically pleasing products (and also, for their price). While this water bottle may not be the cheapest on this list, it certainly is the most stylish, and is durable and lightweight to boot. The Titanium Aruora Bottle comes in five eye-catching colorways, is made from 1mm thick titanium and weighs in at 5.2 ounces. It holds 27 ounces, and is durable enough for everyday use.

Best Collapsible Bottle

Hydrapak Stash Bottle 1L

Collapsible water bottles border on gimmicky, but a good one can stand up to the titanium-walled and insulated heavyweights with its unique utility. Hydrapak’s Stash is a good one. The main body of the Stash is made of soft and flexible BPA- and PVC-free thermoplastic polyurethane (TPU), but its top and bottom are a rigid plastic, which allows for easy drinking (despite the bottle’s unsupportive body material) and lock into each other when collapsed. It can also remain standing on its own when filled, which is the downfall of other collapsible bottles. Full, the Stash is as big as any other liter-sized water bottle; empty and collapsed, the Stash is less than a fourth of its original size, freeing up all the space in your bag that other bottles will continue to occupy even when empty.

More volumes: 25 ounces ($19.95)

Best Flask

Platypus Platy Plus Bottle

Platypus’ soft flask-style bottle is a great alternative for distance hikers and others with a focus on saving weight. The Platy is a two-liter flexible flask made of BPA-free polyethylene with a simple twist-off cap. The main benefit of this super-minimal water bottle is that it’ll take up less space as its contents are consumed, freeing up space in your bag.

More volumes: 27 ounces ($10), one liter ($9)

Best Bottle for Running

Osprey Duro Handheld with Soft Flask

Technically, Osprey's Duro Handheld is just what its name implies, a handheld water bottle. But it also isn't, because you don't need to hold the bottle per se — Osprey's ambidextrous strap secures the bottle in your hand, so you don't have to hang on actively and can focus on the run. The bottle itself is a lightweight 250-milliliter soft flask that stows easily when empty, and the opposite side of the hand strap has a small zippered pouch with enough space for running essentials like your keys, a credit card or gels.

Best Bottle for Cycling

Specialized Purist 26 Oz

Specialized’s bicycle manufacturing eclipses the fact that it’s been making sport water bottles since 1978. There’s a good chance you’ve quenched your thirst with one of its bottles too, as much of its business involves customization. The Purist is constructed with a glass-like non-permeable barrier fused to its interior, which prevents the malleable material from retaining tastes and getting moldy as other soft plastic bottles are prone to do. It’s also available with one of three different types of active valve lids.

More volumes: 22 ounce ($12.99)

Best Growler

Hydro Flask Beer Growler - 64 Oz

Hydro Flask’s 64-ounce Beer Growler is a major upgrade from the glass jugs you’ll ordinarily find at breweries. Hydro Flask’s growler is equipped with double-wall vacuum insulation and lined with stainless steel, which doesn’t retain flavor and is easy to clean. Its lid is equipped with a rigid, easy-pour handle and is designed specifically to maintain carbonation too. That helps if you aim to transport beer up a mountain, or even just in the car to a casual gathering, and if your drinking destination is hours away, no worries — the insulated construction will keep whatever’s inside cold for hours and hours.

More volumes: 32 ounce ($47)

Best Modular Water Bottle

Camelbak Multibev

CamelBak calls the MultiBev a two-in-one water bottle, but it has more uses than that. It's an insulated water bottle with a non-slip base, and its lower half includes a removable cup for portioning and sharing. The removable cup even gets its own lid, which is made of flexible, food-grade silicone. That stores inside the MultiBev's main cap, which offers up a third use: the compartment is large enough to hold snacks, tea or a small wad of cash.

More volumes: 17 ounces ($47.95)

Best Lid Design

Purist Mover Vacuum Bottle

Purist's stainless steel, vacuum-insulated water bottles make a case for taste. It lined the inside of each vessel with an imperceptible and unbreakable layer of glass that neutralizes the steely flavor you might experience drinking from other bottles. More recently, the company created the Scope lid, which swivels open to allow you to drink from any angle. The action is oh so smooth, and it makes for a bottle design that's satisfyingly sleek and somewhat futuristic.

Best Filter Bottle

GRAYL GeoPress 24 oz Water Purifier Bottle

If you want to avoid relying on plastic water bottles while you're traveling or camping, you'll need a filter and purifier. Grayl combines both into its 24-ounce Geopress bottle. It works like a French press, with a purifier cartridge that uses ion exchange and activated carbon to remove bacteria, protozoa, viruses, chemicals, heavy metals and other pollutants from your bottle. The whole process takes about eight seconds — and just a little bit of muscle — and each cartridge lasts for roughly 350 uses (that's almost 250 liters of water).