When a pack that holds only water is too small and a pack that holds everything is too big, the Siskin 8 is just right. A high-performing mountain biking pack that provides stability and comfort on the gnarliest of trails, the Siskin allows you to bring just what you need (and nothing more) on your ride. A direct-access zip path leads to an included 2.5-liter reservoir, and a U-zip main compartment opens wide to stuff a spare tube, flat repair tools, and your PB&J inside. A mesh-covered foam backpanel offers ventilation and allows for lively movement while keeping your pack close to your body, even when you’re riding loose. The front of the pack features a LidLock attachment point for a standard-size helmet, while side compression straps expand to fit a full face.Key AttributesVARIABLE HELMET CARRYIncludes Osprey's LidLock helmet carry for traditional helmets and front panel upper compression straps for full face helmets.RESERVOIR INCLUDEDOsprey Hydraulics® LT 2.5L reservoir keeps you hydrated all day long and stores in a dedicated hydration compartment to protect pack contents from accidental spills.MOUNTAIN BIKE-FOCUSED FEATURESMulti-pocketed tool organization and large bucket main compartment stores and protects all your essential gear.RIDE STABILITYOur rolled, soft-edged harness contours to the upper shoulders to keep the pack close to your body and provide stability.Features Included Osprey Hydraulics® LT 2.5L reservoir by Hydrapak with direct-zip access Magnetic sternum strap bite valve attachment Dual upper side compression straps double as a full face helmet carry Full front panel U-zip to main compartment and tool organization Front panel shove-it pocket LidLock helmet attachment Loop for blinky light attachment (light not included) Internal scratch-free, heat-embossed slash pocket Carry InformationAIRSCAPE SUSPENSIONAtilon foam framesheet enables dynamic body movement and evenly distrubutes load across the entire backpanelAIRSCAPE BACKPANELMesh-covered extra deep ridged foam with center air channel allows maximum ventilation while keeping the load close to the bodyBIOSTRETCH HARNESS Soft breathable spacermesh contact surfaces and die-cut foam ventilation Rolled, soft-edged harness designed to contour the shoulder providing comfort and stability Specs VOLUME: 488 IN3 / 8 L DIMENSIONS: 18.5H X 8.5W X 6.9D IN. WEIGHT: 1.16 LBS. FABRIC: MAIN: 900x600D Polyester ACCENT: 210D Nylon Duramax BOTTOM: 420HD Nylon Oxford