If you're putting an air mattress on top of your GO-KOT™, this is a must-have. Stop sliding off your cot and get one! The kit is comprised of two pieces (head & foot) that attach to the GO-KOT™ and hold your mattress in place (works with most mattresses). All end kits are made with the same 1000-denier nylon fabric as our cots and will fit any size GO-KOT™. We'll match your cot color as close as we can, or mix-and-match colors to customize your GO-KOT™.