The Vanguard USA Supreme 40F Carrying Case (Black) is a virtually indestructible, engineered hard polypropylene case that is airtight and built to withstand the most extreme conditions. The O-ring sealed case is waterproof up to a depth of 16.5' (5.0m). It has a 3 piece foam set with a recessed area inside the case for the top foam and an automatic pressure equalization valve. There are thick, quick-release, easy-opening latches that lock in place and steel-reinforced lock holders for use with padlocks for added security. The case is carried by a cushioned handle and has anti-slip rubber feet.