Airtight, watertight, and 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 ease of opening. Inner Dimensions (inches): 18.47 X 13.31 X 6.75. Made From HD Polypropylene Copolymer Comfort Molded Handles Spring Loaded Latch System TSA Rated