The Pelican 1690 Watertight Hard Case with Cubed Foam and Wheels is an unbreakable, dustproof, and corrosion-resistant protective case, designed to offer unparalleled protection for your valuable equipment. Crafted from Ultra High Impact structural copolymer, this rugged case boasts exceptional durability and strength. One of the standout features of this case is its exclusive 1/4"" (6.4 mm) neoprene o-ring and Abs 'easy-to-open' latches, which ensure a perfect seal, safeguarding your equipment from water and dust. The case also includes an automatic purge valve, facilitating quick equalization following changes in atmospheric pressure, a feature that is particularly beneficial for those venturing into diverse environments.Designed with convenience in mind, this protective case is equipped with heavy-duty wheels and a retractable extension handle, making transportation a breeze. Additionally, it features large two-person fold-down carrying handles for added versatility.