Fishpond Thunderhead Backpack Padded InsertGet organized! This drop in system allows for increased organization of gear in your Thunderhead Submersible Backpack. The padded walls and floor of the insert offer protection against bumps and vibrations for camera bodies, lenses, fly boxes, and other valuables. Drop in design and quick assembly 1 full width divider with laptop slot 2 movable dividers for fly boxes, camera lenses and bodies, and other pieces of gear Compatible with the Thunderhead