The RACE BELT is a hip pack that has been optimized for use in racing with fastening options that gives the rider direct access to tools and spare parts. It's a snug-fit and comfortable carrier system that can be worn under the jersey. Airo Flex hip belt and Air Pad System for ideal carrying comfort. Perfect pocket management—a place for everything. Elastic Mesh pockets with velcro fastening in the back & on left hip. Zippable pocket on right hip. Loop for mini-pump or CO2 cartridge & inflator. Material: N 210D Ripstop HD, PU Coated, 3D Air Mesh, Airo Flex. Volume: 0.8L. Size: 25 x 13 x 2cm (9.8 x 5.1 x 0.8”). Weight: 180g (0.4lbs).