The Road Warrior cases are rugged shipping cases that are waterproof and dustproof. These UK cases are used in the medical field and by the military to transport weapons systems. The optional fiberglass reinforced extendable pull handle and 2" wheels make maneuvering easy with heavy loads. One of the more unique features of this case is the removable full length stainless steel hinge pin - this allows the lid of the case to come off. Many competitive products feature plastic latches, the UK Road Warrior series feature stainless steel twist lock latches for ultimate protection. In addition, these UK cases feature metal spring loaded handles...both features frequently demanded by military customers. The o-ring seal on this Underwater Kinetics case protects electronics, cameras, lighting, medical kits, weapons, sales kits, test equipment, cables and more from water, harmful gases, salt, sand, dust, and impact. The pressure equalization valve allows for easy opening after altitude or temperature changes.