The Pelican 1780NF Transport Case (Black) 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 the elements. It is made of ultra-high-impact structural copolymer, which makes it extremely strong and durable. It has a watertight 0.25" (6.4mm) neoprene o-ring that seals perfectly, and includes an automatic purge valve for quick equalization after changes in atmospheric pressure. It uses easy-open, double-throw latches to open and close the case, and a folding carry handle plus four strong polyurethane wheels with stainless steel bearings, to transport the case. The case has been tested to meet Def Stan 81-41/STANAG 4280 specifications.