The Siskin Men's hydration pack is a svelte option for those who want to carry just enough gear, the Siskin Series is a high-performing mountain bike pack that provide stability and comfort on every trail. Multi-pocketed tool organization and large bucket main compartment stores and protects all your essential gear.Airscape Suspension allows dynamic body movement and distributes load across entire back panelAirscape back panel Mesh-covered extra deep ridged foam allows maximum ventilation while keeping the load close to the bodyBiostretch Harness is a bike-specific winged shoulder strap shape provides comfort and stability with soft, breathable spacermesh contact surfaces and die-cut foam ventilationUpper side compression and full face helmet carryDirect access zip path to reservoir compartmentU-zip main compartment accessFront fabric shove-it pocketLidLock helmet attachmentWARNING! High Energy Magnet Could affect the function of electronic instruments like pacemakers or avalanche beacons Swallowing hazard. Not for use by children under four years old. See Osprey Hydraulics Owner s Manual for more informationItem SpecificationsColorBlackDefined ColorBlackGender/AgeMen'sReservoir IncludedYesReservoir Volume (fl oz)85Weight530 Osprey Siskin Men's Hydration Pack Hydration Packs UPC: 843820159899