The Otter Box 8000 Series case is waterproof, crushproof AND watertight. These cases are perfect for protecting your valuables from the elements, whatever they may be. The Otter Box 8000 offers watertight protection and storage for pagers, car keys, film, batteries, credit cards, small wallets, cell phones, fishing lures and so much more. The Otter Box is a patented dry box designed to handle full submersions--up to 100 feet! The solid color boxes provide nearly 100% UV protection. The main case seal is made from a foam silicone cord. The plastic used to make the colored Otter Boxes is an ABS plastic that's reinforced with fiberglass. The hinge pins are made from marine grade 316 Stainless Steel which is the standard choice for salt and freshwater applications.