Many of you already know that the “Tour Back” is an instant (just strap it over the hard plastic back) comfort fix for the Tarpon series of boats. It is constructed of the soft, self-contouring thermal-molded foam used in our top-of-the-line GTS seats. The contoured seat pad measures 15.5″ wide x 15″ long with a 10″ high x 14″ long back pad. We now offer this back rest with or without a pack. Features 320 cubic inches of storage.