T.Z. Case's CB022B Cape Buffalo Waterproof Utility Case with Wheels is both durable and functional. Designed to use as an airline carry-on or just to slip into the trunk of an officer's car, this rugged case is made of molded polypropylene and rolls smoothly on inline skate wheels. The case features a waterproof seal, interior foam in the lid and base, heavy-duty handles and a pressure release valve. The case can be padlocked in two places for added security. The outside dimensions are 22 inches by 14 inches by 9 inches.