Best Water Bottle for Hiking of 2021 (Guide & Reviews)

by Julien Heron
Last Updated: February 3, 2021
Close-up on intermediate climber tying her shoelace

Staying hydrated, whether you’re hiking the steepest mountain or trekking on your favorite trail, is essential not only for your health but for your performance and overall resilience. If you’re currently hunting for the best water bottle for hiking, look no further than this comprehensive buying guide and review.

Let’s get down to business!

The top 5 water bottle for hiking we recommend for 2021:

Best Water Bottle for Hiking Buying Guide

Here’s what you need to know to select the best hiking water bottle.

The Right Size

Selecting the best water bottle for hiking starts with making sure you have the right size bottle that will provide you with sufficient hydration for your outdoor adventures. Water bottle sizes are measured in fluid ounces and liters, and typically contain a capacity between 16 to 32 ounces (which translates to about half a liter to a full liter).

Men are advised to drink approximately 3 liters of water daily, while women are supposed to drink around 2.2 liters. When you are on an exhausting hike, it’s essential to ensure you’re getting enough water to keep you powered up. You should be drinking between 4 to 6 ounces of water about every half hour.

If you tend to go on shorter hikes, you might not need as larger a water bottle capacity. On the other hand, if you are a frequent hiker who often engages in strenuous treks, you had best stick closer to 32 ounces.

The Right Shape

Besides water bottle size, another important factor to consider if you are hunting for the best water bottle for hiking is the shape you desire. The right shape for your hiker needs will entirely depend on the type of activity or usage you have in mind.

For example, if you frequently go running on trails, you would want to make sure you picked a water bottle that fits easily in your hand and won’t weigh you down. For hiking enthusiasts and regular trekkers, you’ll likely want a water bottle that holds a higher capacity so you can stay hydrated for the duration of your hike.

The best hiking water bottle is usually a bit larger than your standard water bottle variety. If you like to store your water bottle in a side compartment of your gear when you are out on the trail, just make sure it is narrow enough to fit into the pocket area.

Types of Water Bottle Materials

There are quite a few different types of water bottle materials to choose from when selecting the right one for your hiking needs. It partially comes down to a matter of preference, but there are certain materials that are going to be more durable and last for much longer than others.

Your first option is plastic. Plastic water bottles come in a wide range of designs, so they can be collapsible or the traditional rigid variety. Plastic hiking water bottles come in all shapes and sizes too, so whether you like to carry your water bottle or keep in your back you have plenty of options with this type of material.

Plastic water bottles do tend to be more affordable than other materials. With that said, they are not quite as durable as some other water bottle types like metal would be.

Metal water bottles manufactured from materials like stainless steel are highly durable. If you tend to hike in rough terrain, metal water bottles are a good choice because they can withstand drops and are light to carry.

Glass water bottles are an alternative to plastic water bottles. They are somewhat durable and make for hazard-free water drinking without having to worry about added chemicals in the material.

However, they are definitely the most fragile water bottle material you could choose. So, if you anticipate going on a tough hike where the bottle could drop or come into contact with a rugged surface, this might not be your best option.


Whether or not you want a nozzle on your water bottle for hiking is a matter of personal preference, but this feature could prove highly functional during long hours spent outside on the trail. Nozzles make it easy to stay hydrated without having to unscrew the lid every time you want a drink of water.

A nozzle also makes the water consumption process a bit less messy as you won’t have to worry about water splashing everywhere anytime you take a sip.

The Best Water Bottle for Hiking Reviews

Choosing the best water bottle for hiking doesn’t have to be a pain. Check out the top 5 options you’ll want to consider incorporating into your gear on your next hiking trip.

YETI Rambler Vacuum Bottle

YETI Rambler Vacuum Bottle on white background
YETI Rambler Vacuum Bottle
A very durable tumbler that will keep beverages cold or hot
YETI Rambler Vacuum Bottles feature an insulated design with a stainless steel exterior to keep your drinks cold or hot for hours at a time.
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  • Very durable
  • Quality stainless steel design
  • Handy screw lid
  • Good insulation for beverages
  • Not as much ounce capacity as some other water bottles
  • Heavier choice

The next best hiking water bottle on our list is this quality choice from Yeti. If you want a basic water bottle that will serve you well on the trail, this could be the pick for you. We like the stainless steel design of the YETI Rambler Vacuum Bottle, featuring special insulation to keep your cold drinks chilled in the heat and your warm beverages hot in the cold.

We really appreciate the wide opening at the top of the bottle, that makes it simple to keep clean and avoid bacteria forming. The YETI Rambler also sports a screw lid featuring a handle so you can take it with you on the go just about anywhere. If you prefer a different kind of lid, you can also buy other varieties separately to fit your YETI Rambler, including a straw lid for sipping.

We do wish the water capacity was a bit more, but the 18 ounces should be sufficient for shorter to moderate hiking times. We will note that the YETI Rambler is one of the heavier choices on your list, despite the fact that it doesn’t hold as many ounces of water at once. So, if you don’t mind that extra little bit of weight, it shouldn’t be a problem.
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Klean Kanteen Insulated Classic

Klean Kanteen Insulated Classic on white background
Klean Kanteen Insulated Classic
A classic stainless steel water bottle that uses Climate Lock double-wall vacuum insulation
The Klean Kanteen Insulated Classic can keep drinks iced for 50 hours and beverages hot for 20 hours, and this makes it perfect for your outdoor adventures.
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  • Very durable
  • Great dual insulation
  • Impressive hot and cold beverage temperature capacities
  • User-friendly screw cap with loop
  • No anti-slip grip to hold onto
  • Small bottle opening which could require extra cleaning to ward off bacteria

The Klean Kanteen Insulated Classic best water bottle for hiking is a more affordable version of the Hydro Flask we previously reviewed. If you want a similar, but a more cost-effective version, you’ve found it.

The Klean hiking water bottle sports an impressive dual vacuum wall to insulate all your beverages. In fact, it can keep your hot beverages hot for as long as 24 hours in cold climates, and cold for as long as 90 hours in hot weather!

We like the user friend screw cap the Klean Kanteen Insulated Classic features, along with a handy loop so you can secure the bottle to the rest of your gear by using a carabiner. However, here are a couple of areas where we think this water bottle for hiking has room for improvement.

First, the water bottle doesn’t sport any type of anti-slip exterior, so you won’t get as quality a grip when you go to get a drink. Also, the bottle opening is fairly small, which could make it a bit tougher to keep clean.
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Hydro Flask Wide Mouth

Hydro Flask Wide Mouth on white background
Hydro Flask Wide Mouth
A wide mouth bottle that effortlessly delivers full-on refreshment
The Hydro Flask Wide Mouth comes with a vacuum-insulted stainless steel bottle and a wide mouth that makes it the perfect travel companion when you're outdoors.
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  • Durable stainless steel exterior
  • Insulates beverages to them hot or cold as you desire
  • Nice slip-free design
  • Easy to clean
  • Lightweight
  • Water has a tendency to gather in the rubber seal
  • The bottle seal could leak with extended use

The Hydro Flask Wide Mouth water bottle is a fantastic choice for both beginner and expert hikers alike. The stainless-steel water bottle sports an impressive 32 ounces of water capacity, which is great for long hikes, but it is pretty lightweight so as not to bog you down. The only real downside of the Hydro Flask Wide Mouth water bottle is that it is not as affordable as some of the other selections on our list.

Even so, it features handy TempShield technology that gets rid of condensation and insulates your water from the outdoor elements. The water bottle while keep your water cold as long as 24 hours in balmy weather. If you’re preparing for a chilly hike, you can enjoy a warm beverage that will stay hot for up to 12 hours, even in the cold!

What’s more, the Hydro Flask is very easy to clean, sporting a screw lid and wide mouth. You can even choose from a variety of lids for the Hydro Flask Wide Mouth Water bottle (purchased separately). We really like this water bottle’s slip-free design that is resistant to wear and tear to serve you well for many hikes to come.
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Avex FreeFlow AutoSeal

AVEX FreeFlow AutoSeal on white background
AVEX FreeFlow AutoSeal (Not available anymore)
A bottle that automatically seals between sips to eliminate leaks and spills
The AVEX FreeFlow AutoSeal comes with an auto seal operated lid and a stainless steel body to make it a rugged choice for camping, hiking, or outdoor activities.
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  • Very dependable and durable
  • Quality insulation, especially for chilled beverages
  • AutoSeal design
  • Locking capability to avoid spillage
  • Button mechanism could be complicated at first
  • Water capacity could be higher

The Avex FreeFlow AutoSeal has quality insulation, enough to keep your hot beverages warm for as long as 10 hours and your cold beverages chilled for up to an astounding 29 hours. So, if you like to go on long hiking trips, you’ll be able to enjoy cool refreshing water for many hours of activity.

We really like the AutoSeal design of this water bottle, as it sports a lid button that you can use to automatically open and close it. The great part about the AutoSeal design is that you can lock the button to ensure it doesn’t open on accident in your gear on a strenuous excursion. Plus, you don’t even have to manually open the lid to take a gulp of water.

Just click the button and drink from the spout. Less water splashing on you and more in the bottle to keep you hydrated. We would say that the AutoSeal button is a little complicated at first glance, making it a little less user-friendly than we would like. Of course, you can unscrew the cap if you like to take a sip of water too.
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CamelBak Chute Vacuum

CamelBak Chute Vacuum on white background
CamelBak Chute Vacuum
The bottle comes designed to keep your drink at the perfect temperature
Designed for chugging, the CamelBak Chute Vacuum bottle has a wide lid, double-wall vacuum insulated walls, and a durable carrying handle that makes it easy to keep you hydrated.
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  • Stylish design
  • Snap cap that turns into a handle
  • Anti-slip finish
  • Good insulation
  • Ounce capacity may not be ideal for super long hikes
  • The time frame in which the bottle keeps your beverages hot could be longer

The last best water bottle for hiking on our list is the CamelBak Chute Vacuum. With a medium range 20-ounce beverage capacity, you’ll be able to stay hydrated for hours. The insulated design will keep your water cold for up to 24 hours, and help ensure warm beverages stay hot for up to 6 hours in chilly conditions.

We were really happy to see that the CamelBak has an anti-slip finish for easy gripping. We also really liked that you can snap the cap to a handle for easy access and hydration. The handle is compatible with a climbing harness or backpack, so you can secure it to your gear with a carabiner on the road and leave your hands free. The opening is fairly large, so you won’t have any problem cleaning the seal’s tough to get spots.
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The Ultimate Winner

After carefully examining each of the top 5 best water bottle for hiking options on our list, we would have to name the Hydro Flask Wide Mouth water bottle as the ultimate winner. It really ticked off all the boxes that the best water bottle for hiking should have, including the highest beverage capacity compared to the other selections on our list.

We really liked the Hydro Flask’s stainless-steel design and TempShield technology to insulate your beverages. The anti-slip components of this water bottle were a huge plus for us, plus we also really liked the fact that it is easy to clean. On top of that, you can choose a variety of separate lids for the Hydro Flask, which makes this water bottle for hiking infinitely easy to customize to meet your hiking needs.

Julien Heron
I’m passionate about all things outdoors, bridging the gap between generations and sharing my passion for hiking and camping. My goal is to spread the endless benefits of being outside, always striving for better performance, new challenges, and ways to explore responsibly.
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