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Last updated on April 14th, 2022

Water bottles are essential pieces of outdoor gear. Backpacking often requires strenuous activities, so proper hydration is a must. If outdoor life keeps calling to you, you need to own at least one reusable water bottle that fits your needs to accompany you on the most daring of adventures. 

We have compiled a comprehensive guide on choosing the best water bottle and our top picks to help you invest correctly.   

The Ideal Hiking Water Bottle Size 

Generally, 16-24oz bottles can keep a person hydrated throughout the day, and the volume does not amount to a burdensome weight. But when you know you’ll need more water, bottles that can carry up to a liter (33.8oz) of water will do the job.

Other than the capacity, the diameter and the height of the bottles also need careful consideration. For example, if your bottle is too wide, it will be hard to hold or fit in your bag’s side pocket, and if it’s tall, it will be hard to fit it in a backpack.

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Best Water Bottles for Hiking and Backpacking

Below, we have compiled numerous options for hikers with diverse preferences. Whether you like lightweight plastic, insulated steel, or filtered bottles, you’ll find an option in the list. 

1. Grayl UltraPress Purifier

Best Overall Backpacking Water Bottle

Best Overall Backpacking Water Bottle: Grayl UltraPress Purifier

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Grayl showed that it took customer feedback seriously by introducing the UltraPress Purifier. Previously, the acclaimed Grayl Geopress dominated the filtered water bottles market but came at the cost of a higher weight and bulk, making it inconvenient to carry.

The UltraPress Purifier comes as a lightweight, less clunky version of the Geopress: similar superior filtration and purification experience with an easier-to-use design.

It can be used in the murkiest of waters, purifying up to 16.9oz (499.7ml) and delivering pristine results through electroabsorption and activated carbon.

The Grayl Ultrapress Purifier is the best backpacking water bottle because it can remove common protozoa, bacteria viruses, heavy metals, plastics, pesticides, and more, making it a must-have for adventurous trips. 


  • Excellent cleaning capabilities
  • Cheaper than the Geopress
  • Lightweight
  • Fits in cup holders and outer bag pockets due to its smaller diameter


  • Holds a smaller volume  
  • Filter has a shorter lifespan than the Geopress.
  • Cap not tethered to the bottle

2. Iron Flask Sports Water Bottle

Best Overall Hiking Water Bottle

Best Overall Hiking Water Bottle: Iron Flask Sports Water Bottle

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The Iron Flask is an excellent option for those who prefer insulated bottles. Made of durable stainless steel, the bottle comes double-walled and vacuum-sealed. In addition, the powder coating allows for a firm grip and a variety of colors — 24, to be exact.

Though many bottles offer additional lids of different types, they come at a cost. On the other hand, the Iron Flask comes pre-equipped with three caps: a stainless steel lid, a flip lid, and the carabiner straw lid. Further enhancing customization, the bottle comes in six sizes.

The Iron Flask is the best water bottle for hiking because it’s easy to carry, well priced, and comes in various sizes.


  • Affordable
  • Offers good insulating capabilities
  • Durable
  • BPA free
  • Available in multiple sizes and colors
  • Comes with three lids 


  • None of the caps is leak proof
  • Not dishwasher safe

3. LifeStraw Go Water Filter Bottle

LifeStraw Go Water Filter Bottle

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The LifeStraw Go is a small, lightweight BPA plastic water bottle with an integrated straw-filter system. This bottle is designed with one specific purpose in mind — to filter water as you drink, providing you with clean water wherever you go.

If you are looking for an easy-to-use water filter bottle for hiking trips near water sources, LifeStraw Go is a decent option.

The filter has a hollow fiber membrane and an integrated activated carbon capsule system. It can clean up to 4000 liters of water, claiming to clean 99.9999% of waterborne bacteria and 99.9% of protozoan parasites, though not viruses.

It is to be noted that the Go filters only as you draw water out through the straw, so it is not intended for any other use such as washing a scrape, etc. 


  • Easy refilling as the bottle has a wide mouth
  • Takes all bad taste out of the water without leaving its own chlorinated taste
  • Leakproof
  • Lightweight, easy to pack
  • Easy to take apart and clean
  • Durable


  • Takes a fair amount of force to suck the water through the straw because of the filter
  • The filter and straw can trap flavor, so it can only be used with water 
  • Not versatile

4. CrazyCap UV Water Purifier & Self Cleaning Water Bottle

CrazyCap UV Water Purifier & Self Cleaning Water Bottle

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The CrazyCap Purifier is an ultralight, easy-to-use system designed to purify water against viruses, bacteria, and protozoa through UV Light. 

When prompted, the bottle’s lid emits UV rays that destroy the DNA of particular microorganisms. CrazyCap simply requires the user to fill up the bottle and press on its top twice to clean 0.5 liters of water in 60 seconds. The light can even be used to clean contaminated surfaces. The cap has a 60-second mode and a 90-second one (The Crazy Mode).

The bottle itself is made of steel and offers double-walled vacuum insulation. The cap is charged through a USB cable, requiring a charging time of 1.5 to 2 hours, and the battery can last you about 60 filter cycles of 17oz of water. You can sterilize the bottle simply by emptying it and turning on crazy mode.

It is to be noted that CrazyCap is not a filtration system, so it does not claim to remove particulate matter, heavy metals, or synthetic chemicals.

This bottle is a highly convenient water purifier.

We recommend it when you plan to camp near a clean water source that may contain microorganisms but not urban pollutants. It is also an excellent option for international travel.


  • Lightweight, especially when compared to other purification systems.
  • Durable: does not deform easily
  • Very simple to use
  • Fast charging and a good battery life
  • Self-cleaning 


  • It does not filter any particulate matter
  • Low volume

5. Arc Bottle Water Bottle With Time Marker

Arc Bottle Water Bottle With Time Marker

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Sometimes, we need a decent, lightweight, non-insulated water bottle when the weather’s perfect. The Arc Water Bottle is ideal for those times. 

It’s made of frosted, ultralight BPA-free plastic and comes with a screw-on stainless steel lid: designed to be minimalist and sleek.

In addition, it comes with time markers to let you monitor your water intake: fill it in the morning, drink to the marker each hour, refill at lunch, and repeat.

This bottle is very convenient for health-conscious folks to take on short hikes, and it can hold up to 37oz of liquid. Plus, a reusable Tritan plastic bottle is non-toxic to the environment so that you can be sure of a wholesome experience. 


  • Lightweight
  • Decent capacity
  • Time markers
  • BPA-free


  • Not very durable: the plastic is not shatterproof; some face problems with the lid as well
  • Reported to not age well: the markers wear off if used roughly 

6. YETI Rambler 26oz Bottle, Vacuum Insulated

YETI Rambler 26oz Bottle, Vacuum Insulated

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The Yeti Rambler 26 is a favorite of many. It features a double vacuum insulated stainless steel body and a Chug Cap with an integrated drinking spout, making for an easy-to-use water bottle.

The Rambler is further known for its sleek look and multiple color options: the diameter makes it a non-bulky bottle, and the carrying handle built into the cap further makes it an easy partner to move around with.

The bottle provides the advantages of a wide mouth and a drinking spout simultaneously. As the spout can be removed with the cap, the slightly larger-than-average width of the mouth makes it easy to clean; it does not retain taste from previous beverages either. Not that the spout can not be used with hot drinks.

The durability and insulation capabilities of the bottle are next to none, making it perfect for hikes that involve climbing.


  • Very durable
  • Wide mouth and drinking spout duo  
  • Easy to use
  • Dishwasher safe 
  • Superior insulation
  • Leakproof


  • Heavy, may not be suitable for overnight adventures
  • Slightly pricy

7. Hydro Flask Wide Mouth

Hydro Flask Wide Mouth

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The Hydroflask Wide Mouth lives up to its value in price. It is mainly stainless steel, offers superior durability and insulation, and is not as heavy as other insulated bottles.

In addition, it is designed to prevent condensation and comes in a matte finish, allowing a firm grip. It does not retain flavor and is very easy to clean. 

If you prefer wide-mouthed bottles, you should definitely consider this option. It comes in a variety of color options too!


  • Very Durable 
  • Insulated: maintains temperatures for a considerable amount of time
  • Does not retain flavor
  • Easy to clean
  • Leak-Proof
  • Non-slippery


  • On the pricier side
  • May be considered heavy

8. Earthwell Woodie Water Bottle

Earthwell Woodie Water Bottle

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Eearthwell is renowned for its dedication to producing durable, eco-friendly stainless steel drinkware. Moreover, 1% of each sale goes to environmental nonprofits and charities.

Their Earthwell Woodie 27oz bottle is designed for nature lovers with its timeless design, muted tones, and wood-topped cap.

Made of single-walled stainless steel finished with a powder coat, the bottle is durable and easy to grip. Reviews further note that it makes water taste surprisingly fresh. The top surface of the screw-on cap can be chosen to be made of maple or walnut wood, with a steel handle grip fixed into the cap.

The ultralight nature makes it useful for camping and short hiking excursions. It is definitely one of the most impressive bottles for outdoor enthusiasts and nature lovers in the market.


  • Comes with a lifetime guarantee
  • Offers a firm grip
  • Durable
  • Environmentally friendly materials


  • Cap is not dishwasher safe
  • Does not offer double-walled insulation, though it reportedly maintains temperature

9. HYDRO CELL Stainless Steel Water Bottle

HYDRO CELL Stainless Steel Water Bottle

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Made of double-walled, vacuum insulated stainless steel, the Hydrocell Stainless Steel bottle is leakproof, durable, and serves its purpose well. 

The bottle comes equipped with a steel screw cap and a bonus sports cap with a straw for cold beverages. In addition, it is further oxidation and corrosion resistant with a condensation-free exterior.

Hydro Cell offers this bottle in various sizes and colors coupled with a large selection of paracord handles, bottle boots, and replacement caps sold separately. So if you want a plastic-free insulated bottle, do give serious consideration to this option.


  • Durable
  • Well-Insulated
  • Customizable
  • Condensation Proof
  • Comes with two caps


  • Not Dishwasher Safe
  • Some sizes do not fit in slightly narrow cup holders
  • Small percentage of buyers report defects in the straw or the design 

10. Camelbak Chute Mag 25oz Bottle with Tritan

Camelbak Chute Mag 25oz Bott

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The Camelbak Chute Mag is another lightweight plastic bottle free of BPA, BPS, and BPF. It features a simple, easy-to-use design with a delightful innovation: a magnet that helps stick the cap to the nook when you’re drinking water from it.

This little detail shows its usefulness when you need to drink water on the move, making sure the cap doesn’t snap back at you like other mechanical tethered caps. 

The latest version of the Camelbak is made of fifty percent recycled material, further adding to its value.


  • Affordable
  • Convenient cap
  • Lightweight
  • Durable
  • Odor and stain resistant


  • Non-insulated
  • Flow of the mouthpiece may be heavy for some

11. Vapur Solid Flexible Water Bottle

Vapur Solid Flexible Water Bottle

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Collapsible water bottles are a must for camping experiences. The ultralight Vapur Solid Flexible Bottle stands out from the rest of the items in the list as it stands only when full.

This anti-bottle can be collapsed into a flat sheet to roll or fold when empty, making it highly convenient to carry. It is almost 90% lighter than rigid bottles and is durable, leakproof, and dishwater safe.


  • Ultralight
  • Flexible
  • BPA free
  • Does not carry after tastes


  • Flexible bottles can be hard to drink from
  • Sharp edges
  • Not very durable when used roughly, it can develop a leak

12. Nalgene Wide Mouth Water Bottle

Nalgene Wide Mouth Water Bottle

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The Nalgene Wide Mouth has been a well-loved staple for backpackers for a long time. Made of BPA-free Tritan, it can hold up to 32oz of any hot or cold beverage.

The material is further known for its ultralight nature, durability, and resistance to odor and stains. This bottle also comes in multiple colors and has markers printed on the surface to help with tracking water intake.

Its wide mouth with a screw-on cap makes it easy to fill and wash, and the size is compatible with most of the filtration units. A loop attached with the cap facilitates taking it on travels as well.

The lightness, durability, affordability, and versatility of the Nalgene Wide Mouth make it ideal for any hiking adventure.  


  • Lightweight
  • Affordable
  • Durable
  • Versatile
  • BPA free


  • Non-insulated 

13. Klean Kanteen Insulated Classic Bottle

Klean Kanteen Insulated Classic Bottle

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Powered by 100% Carbon Neutral manufacturing and delivery processes, and a certified member of the B Corp movement, Klean Kanteen is another brand that strives to keep itself eco-friendly by providing alternatives to single-use products. 

This stainless steel Insulated Classic can hold up to 20oz of liquid, with double-wall insulation promising to keep drinks hot for 24 hours and iced for 63 hours. The opening is wide enough to fit ice cubes, and the size fits in most cupholders.

Moreover, the brand offers many cap options, including loop caps, sport caps, etc., but they have to be purchased separately.

The bottle comes in a 32oz and a 12oz option, and offers seven powder coating colors to choose from.


  • Good insulation
  • Multiple compatible caps 
  • Dishwasher safe


  • Bottom is malleable and dents easily
  • Users cannot choose a cap despite having multiple cap options while purchasing. Any caps of preference have to be bought separately 

14. GSI Outdoors Microlite

GSI Outdoors Microlite

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The GSI Outdoors MicroLite is an insulated stainless steel water bottle with 17, 24, and 33oz options and has screw-top and flip cap options. This model stands out from other insulated bottles because its 2mm walls make the bottle three times lighter than regular insulated bottles.

The design is compact, slim, and condensation proof, letting hikers carry it easily. If you prefer insulated water bottles but are not a fan of their weight, this is the perfect bottle to take on walks, hikes, and camping. 

Except, be a little wary of rugged terrains and rough climbing experiences as the bottle can dent due to its thin walls. 


  • One of the lightest insulated bottles in the market
  • Well insulated
  • Compact


  • Lid is reportedly weak
  • Bottle can dent

Why Use a Reusable Water Bottle?

Natural systems are precious and fragile. Those who yearn for the feel of forest floors beneath their feet are connected to nature, so they play their part in helping the environment.

Even when made of plastic, reusable water bottles are better for the environment. Their durability lets them be reused, ensuring that fewer resources are utilized. Each refill prevents another disposable bottle from being made.

They come customized per the needs of hikers, climbers, and backpackers, ensuring that carrying them does not get burdensome. 

Furthermore, they cost less over time. So, even if you do not go backpacking often, investing in a reusable bottle will be economical and healthy for the environment.

Should Your Water Bottle Be Insulated or Non-Insulated?

Though insulated bottles maintain temperature, they are heavy and hold less water than non-insulated water bottles of the exact dimensions.

On the other hand, non-insulated bottles are lighter, making them easier to carry. Whichever one of these you go for is a matter of preference. 

Insulated bottles are better for short, light excursions, whereas uninsulated ones will serve you well for extended backpacking trips or strenuous climbing activities.

How to Carry a Water Bottle While Hiking or Backpacking

For short hikes and light bottles, the ideal way is to carry the bottle in your hand so you can sip from it anytime. However, you can utilize side pockets of backpacks and hiking vests for longer adventures and rugged terrains or invest in bottle sling or belt bags. Some water bottles can be easily attached to carabiners and paracords as well.  


Having a water bottle is essential for backpacking. However, ensuring hydration does not mean buying disposable water bottles whenever you find them. Investing in bottles made for easy use and carrying can let you keep your cost and efforts minimum while contributing to reducing wastage. If you go on outdoor trips often, you need to invest in a decent reusable water bottle.