Take to the trails with all the gear you need. The men's Osprey Siskin 8 hydration pack comes with a 2.5-liter reservoir to keep you hydrated on gnarly ascents, speedy downhills and everything else.

• Dedicated reservoir compartment with included Hydraulics LT 2.5-liter reservoir helps you stay hydrated on the trail
• Lightweight sternum strap magnet holds bite valve, allowing for easy access to water on the move
• Upper side compression helps to balance and secure your load while also allowing you to carry a full-face helmet
• U-zip main compartment offers convenient access to your gear, regardless of where it's packed
• Front fabric stuff pocket lets you quickly stash extra gear or a rain shell
• LidLock bike helmet attachment stashes your helmet for easy transport between rides
• Scratch-free, heat-embossed zippered slash pocket holds your sunglasses or electronics
• Blinker light attachment point (light not included)