Fits notebook computers up to 14.4' 2 in 1 protection: detachable computer sleeve and accessories pouch Maximum airline carry on size Strong polyurethane wheels with stainless steel bearings Watertight, crushproof, and dustproof Open cell core with solid wall design - strong, light weight Retractable extension trolley handle Easy open double-throw latches Automatic pressure equalization valve - balances interior pressure, keeps water out O-ring seal Comfortable rubber over-molded top and side handles