This case system is tough. This case is pre-loaded with the Trauma Insert and aluminum Cassette Organizer. The hinged lid front has five slash pockets, 15 elastic loops, and two vinyl zippered pouches. The lid back walls can be rigged for narrow gear, or report clipboards, while the bottom cassette delivers eleven strong adjustable divisions. Your choice of either a Nanuk 940, or Pelican 1550. Exterior dimensions: 20.6 in. x 16.9 in. x 8.1 in.