"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." HYDRATION SHOULD BE easy. After all, you're just giving your body what if often wants most in water.

I used to think the best hydration packs were only for serious ultrarunners—the kind of people who sign up for 100-mile races and run with poles—but in the past few years, hydration packs are ...

If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. Hydration packs aren’t just reserved for hikers and ...