Condition 1's Airtight/Watertight family of cases are 100% Made in the USA. Made from Polypropylene Copolymer, these cases are crush resistant, and virtually indestructible. This rugged case features an O-ring seal, which makes it Airtight and Watertight up to 3 feet. (Tested for 30 minute period.) The automatic air pressure release valve will equalize the air pressure, which allows this case to be airline friendly! It is ATA/TSA approved. Our unique spring loaded latch system will keep this case tightly closed, while still allowing for an ease of opening. There is convoluted foam glued into the lid, and a removable pluckable foam set in the base will allow you to customize the fit to anything you would like to protect! Inner Dimensions (inches): 18.47 X 13.31 X 6.75.