The Thule RoundTrip Boot Backpack makes lugging your gear to the mountain easy, safe and secure.It features a crush proof SafeZone that protects your sunglasses, smartphone, portable electronics and other fragile gear. Padded shoulder straps with sternum strap. Access through back panel door that flips down and doubles as standing mat for changing into boots. Crush proof SafeZone compartment is heat molded, to protect goggles, sunglasses, smartphone, portable electronics and your other fragile gear. Built in loops quickly connect the Boot Backpack to Thule RoundTrip rolling ski and snowboard bags. Two roomy side pockets for outerwear, gloves and accessories. Zipper is lockable lock not included. Grab handls for easy transport. Bottom is heavy duty tarpaulin material for extra protection. Boot compartment has grommets to allow moisture to escape. Tarpaulin900D polyester construction. Capacity: 57L. Dimensions: 19.2H x 13W x 14.5D 49x33x37 cm. Wt. 2.5 lbs. 1.1 kg.