It is constructed from water-resistant fabric with 1-piece foam framed padding and a Velex polyurethane and 210 denier nylon lined interior. There is an exterior molded base that offers sturdy and stable protection water-resistance and stackability. The internal dividing system provides a flexible structure to accommodate lots of gear in various configurations. The Magnum 650 AW has a quick-access organization pocket 2 side pockets a removable accessory pocket laminated mesh organization pocket inside the lid and a mesh ID pocket on the lid.