Compact yet comfortable, the best hydration packs feature a built-in supply of fluids to quench your thirst during all your outdoor adventures, whether you're running, mountain biking, hiking or ...

These are my favorites for mountain biking, marathoning ... Something like the CamelBak Marathoner Hydration Vest ($100). It’s a light, sleek pack that stays close to your body.

We tracked down five of the best hydration packs for outdoor athletes, so if you thirst for options, read on. Many of us at PopSci are bonafide Sporty Spices. We bike, hike, and maybe even ice skate.

CamelBak is a classic in hydration packs and the Rim Runner doesn’t ... and up shale slopes on your favorite mountain bike. A 2.5 liter reservoir gives you enough hydration for hours of non ...

Meant for all-day adventures, this Hydro Flask model is one of the best hydration packs for mountain biking or heavy-duty hiking. The pack itself is roomy so you can fit plenty of gear in addition ...

Camelbak’s Arete pack holds 1.5 liters of water ... so this pack is just as functional when the party is over. When you’re mountain biking, a flapping, swinging hydration hose is annoying. A magnet in ...