The best waterproof, dustproof, and airtight cases on the market! Take your camera on your next water adventure to record the memories, or pack a cell phone for emergencies, and your PDA to stay wired to the real world. Pluck-n-fit foam allows you to customize your box for all your equipment. ABS structural plastic case is virtually crushproof while the built-in O-ring sealed pressure purge valve allows for quick equalization after changes in altitude or temperature. The lid O-ring and pluck-n-fit foam are replaceable. Cases guaranteed for life against breakage due to manufacture defects. Specifications: Inside Dimensions: 18 15/16"L X 14 7/16"W X 7 3/4"D Outside Dimensions: 20 11/16"L X 17 3/16"W X 8 9/16"D