Squeeze a couple downhill runs in during lunch or catch a quick cross-country session before the sun goes down with the Dakine Shuttle 6L Hydration Pack. It has a lightweight, streamlined design that you'll hardly notice as you zoom down singletrack and rip around berms.
The 70oz Hydrapak reservoir holds more than enough water for a short session, and the Phaser bite valve allows hands-free drinking so you don't have to waste any precious time stopping to stay hydrated. An internal pump sleeve offers space for your pump, spare tubes, and tire levers so you're not screwed if something happens in the middle of a ride. Breathable air mesh shoulder straps and back panel help you stay cool when you're pedaling under the summer sun.