Osprey Siskin 12 Pack with 2.5L Reservoir

Coming with a next gen 2.5 liter reservoir, it also has a generous main compartment with plenty of room for your spare tubes, multi tool, trail pump, extra lightweight layers and more.Key FeaturesUpper side compression and full face helmet carryDirect access zip path to reservoir compartmentU zip main compartment accessFront fabric shove it pocketLidLock helmet attachmentBlinker light attachmentMagnetic sternum strap bite valve attachmentHydraulics LT 2.5 L reservoir includedMain compartment tool organizationZippered hipbelt pocketsZippered scratch free heat embossed slash pocket