Designed for discerning mountain bikers looking for a do-it-all pack, the 8-liter Siskin provides a stable, breathable and highly-comfortable carry. A next-gen reservoir provides plenty of hydration for your biggest rides and features like a separate main compartment and LidLock helmet carrier give it all-day versatility. KEY ATTRIBUTES: a RESERVOIR INCLUDED Comes with an Osprey Hydraulics(TM) LT 2.5 L reservoir with direct zip access and sternum strap magnetic bite valve attachment. a RIDE STABILITY A rolled, soft-edged harness creates a comfortable and stable carry. a HELMET CARRY Offers traditional LidLock helmet carry or full face helmet carry with the compression straps. a BIKE-FOCUSED FEATURES Just the right volume for any ride, providing tool organization, helmet carry and a full U-zip main compartment opening. FEATURES: a Upper side compression and full face helmet carry a Direct access zip path to reservoir compartment a U-zip main compartment access a Front fabric shove-it pocket a LidLock helmet attachment a Blinker light attachment a Magnetic sternum strap bite valve attachment a Hydraulics LT 2.5 L reservoir included a Main compartment tool organization