With its water-resistant O-ring seal and tongue and groove design, the Survivor Dry Box from MTM is designed for extreme environments. It also features a compass built in the lid, a signaling mirror, and triple latches for the best possible seal. This rugged all-weather box has lock holes and floats. Inside dimensions are 8.2 x 5 x 2.6 inches. When faced with adversity, rarely are you given a second chance. You rely on experience to get to your destination and the right gear to get it done. 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. Don't be caught without one it is your survival kit. Built-in compass, signaling mirror, water resistant, tongue and groove O-ring design, triple latched for best possible seal, lockable, rugged construction, floats MTM Survivor Dry Boxes are water-resistant not water proof