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 Features:Upper 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