Seahorse Protective Equipment Cases have been engineered to ensure that your most fragile valuables are protected from the most severest conditions. Whether you need to ensure that no dust seeps in during a dust storm or no water trickles in during a monsoon; Seahorse Cases ensures that your contents will be as safe and sound. Made from a high-impact material these cases include a neoprene O-ring for a truly airtight seal. This case features wide track wheels and built-in telescoping tote handle. Whether you are changing altitude or temperatures, Seahorse Cases can adapt with an automatic pressure purge system built right into the latch. Just lift the latch to your airtight case and allow the pressure to equalize. Proudly made in America with a lifetime guarantee.