If you’re looking for an easy-to-fill hydration reservoir for the backpack you already own, the Crux Reservoir Kit filtered by LifeStraw is a great all-around choice that works particularly well when you don't have access to a faucet. LifeStraw's tech consists of a hollow fiber filter that removes bacteria, parasites, and microplastics and, as a bonus, there's also an activated carbon filter that reduces unpleasant tastes and odors. It will fit right into most hydration packs and will ensure you’ll stay hydrated, no matter where your adventures take you.
Capacity: 2 liters
Weight: 10 ounces
Mens/Womens: unisex
Price: $69
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What can I put in my hydration pack?
Your hydration pack's bladder can be used for more than just water. Hydration powders and tablets are a great way to get an electrolyte boost on the trail—just keep in mind that putting anything other than water in your hydration pack means you'll need to clean it more thoroughly, as the sugar in many of these products can encourage the growth of bacteria and mold. Also, the flavor of some of these products can sometimes be absorbed into the bladder material, leaving an aftertaste to whatever you put in the bladder the next time you use it.
Things to Consider When Looking for a Hydration Pack
Reservoir Volume
Hydration pack reservoirs typically hold anywhere from one to three liters of liquid, and some come with even smaller squeeze-style bottles called flasks. That means you can potentially pack roughly six times more water than the standard-sized disposable (recyclable!) plastic bottle will give you. Remember that the more fluid you place in the pack, the heavier it will be—one liter of water weighs just over two pounds. Try to match the water reservoir to the activity you plan on doing, and your hydration needs, and remember that you don't always have to fill it up all the way.
Backpack Volume
The convenience of a hydration pack is that you can carry your water and gear all in one bag. While the hydration part is a key factor here, the bag still needs to be functional for what you set out to do. Some minimalist hydration packs are only designed to carry the water bladder along with a few other essentials, while others are full-sized for a day or multiple days out. Evaluate a hydration pack just as you would any other outdoor bag: consider features like overall volume, pocket layout, weather-resistance, harness type, and extra features you might want, like a rain cover, safety whistle, or laptop pocket.
How Easy the Hydration Pack Is to Fill, Use & Clean
If something is a hassle to use, you probably won't use it. When it comes to hydration packs, ease of use refers to a few different things. Firstly, it should be easy to drink from via a hose with a bite valve that releases water when it is lightly squeezed between your teeth. The pack should include some way to keep this valve close to your face—most use a simple piece of webbing on the pack's shoulder strap. Some bite valves also have a locking mechanism, which we recommend to avoid leaks.
You'll be filling your hydration pack before each use and sometimes while you are out and about. A hydration pack that's easy to fill will ensure more fun and less frustration. Hydration packs with larger openings or ones that can open entirely generally fill easier. Some hydration bladders need to be removed from the pack, while others can be filled while in place. Many brands now make hydration reservoirs with quick-release hose fittings, so you don't have to unweave the drinking hose from your bag to refill the bladder. Not all water reservoirs have this feature though, so keep an eye out.
Most things that are constantly in contact with water could eventually become moldy or slimy. A good hydration pack should be easy to clean and dry after every use. Naturally, a hydration pack that is easily accessible is easier to clean. Larger openings help when it comes to cleaning the inside of a hydration bladder. You can turn some bladders inside out for cleaning, while others can be cleaned in the dishwasher. In this case, turn the hydration bladder inside out before placing it in the washer. Alternatively, you can use specialized cleaning tablets. Remember that the bite valve and drinking tube also need to be cleaned.
Pack Comfort
You can evaluate a hydration pack for comfort just like any other outdoor backpack or bag. Features like padded shoulder straps, a sturdy frame, and supportive hip belt will provide more comfort, especially when carrying more weight (like if you go for that three-liter bladder). You'll also want to consider the pack’s breathability—look for bags that have a ventilated back panel made of mesh and foam. When in doubt, try the pack on at a store before buying it.
