600 denier polyester and 420 denier velocity nylon. Padded sleeve fits 15 in. laptop. Tuck-away shoulder straps for converting to a backpack. Front utility pocket with organizer. 80 mm inline skate wheels. Side water bottle pocket. Skid rails for added protection. Padded grab handle. Two large main compartments. Fully padded back panel. Front stash pocket. Retractable two stage handle. 21 x 14 x 10 in. Black.