The Pelican 1700 Long Case with Foam (Olive Drab Green) is an unbreakable, watertight, airtight, dustproof, chemical-resistant and corrosion-proof hard case used to carry any kind of equipment that needs to be protected from impact damage. It is made of ultra high-impact structural copolymer that makes it extremely strong and durable. It has a 0.25" (6.4mm) neoprene O-ring and easy-open double-throw latches that seal perfectly. It includes an automatic purge valve for quick equalization after changes in atmospheric pressure.