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:Just the right volume for any ride, providing tool organization, helmet carry and a full U-zip main compartment opening.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 pockets