Watertight, crushproof and dust proof construction . Extremely versatile dividers–change the sizes of each compartment as necessary, with included Velcro. Retractable extension handle . Wheels with stainless steel bearings . Double throw latch system . O-ring seal . Automatic pressure equalization valve . Stainless steel hardware and padlock protectors . Rubber over-molded handles on top and sides . Exterior: 22 1/16" W x 10 7/16" H x 17 13/16" D. Interior: 20 7/16" W x 9" H x 15 7/16" D. Includes dividers made of durable nylon and foam