Seahorse Protective Equipment Cases have been engineered to ensure that your most fragile valuables are protected from the most severe conditions. Made from a high-impact material, these cases include a neoprene O-ring for a truly airtight seal. The cases are virtually indestructible, lightweight and watertight and offer the highest rating of protection in a variety of sizes, configurations and colors. Whether you are changing altitude or temperatures, Seahorse Cases can adapt. Just lift the latch to your airtight case and allow the pressure to equalize. (less)