It is made from Ultra-High Impact structural copolymer that makes it extremely strong and durable. It has a 0.25" (6.4 mm) neoprene O-ring, ABS latches that seal perfectly and it includes an automatic purge valve for quick equalization after changes in atmospheric pressure.

The 1640 comes with two side haul handles, an extension handle and strong polyurethane wheels with stainless steel bearings. It has an effortless release latch for the extension handle. The padlock protectors provide added strength and extra security against cutting and theft.

This case has an empty interior.