The Otter Box is a perfect holder for your Pocket PC, GPS, Cameras, Sunglasses, Mobile Phones - just about anything! Otter Box watertight equipment cases are rugged in design as well as being waterproof to a depth of 100 feet. The closed cell neoprene o-ring creates a positive seal which keeps water out. Made with a fibreglass reinforced ABS resin that is virtually indestructible, the various sizes have been pressure tested to depths beyond 100 feet.