FrontierPlay Aluminum Waterproof Utility Storage Dry Adventure Box Container with a Double Seal Built with heavy gauge .080 thick aluminum, for the best box at WHOLESALE pricing Two tension-adjusting latches to keep the lid tightly pressed when closed and latched. Two continuous waterproof gaskets. One gasket is vertical on the inside box lip and one flat gasket. Built without rivets to ensure long term durability. Custom built thick rubber washers used on all bolts to prevent moisture from seeping in where a bolt is located.