Transpack XT1 Boot & Gear Bag (all Colors) Function: Isosceles Storage System?.--Internal zippered pocket shelters personal items. Fabric: Super tough water resistant--Industrial strength material and components. Double locking, self repairing nylon coil zippers.-- Volume: XT1 2800 cu. in. / 46 L Large water resistant central compartment. Adjustable neoprene padded shoulder straps.