With its water-resistant O-Ring seal, built-in compass and signaling mirror, MTM Survivor Boxes are designed for extreme environments. Water- and weather-resistant, they can be used to carry all types of personal and safety items such as medicines, first aid kits, flash lights, flares, ammo, wallets, snacks, rain gear, maps etc. Dont be caught without one it is your survival kit. Features built-in compass, signaling mirror and a rugged, water resistant, tongue and groove O-ring design. Then its triple latched for the best possible seal. The Survivor Dry Boxes are lockable and they even will float. Sizes: S (10L x 8W x 3H); L (10L x 8W x 5H). Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Dry Boxes.