Large swimming buoy in heavy duty nylon. 2 inflatable chambers to be ensure floatation in case of leakage in one chamber. Large heavy duty inflation and deflation valves very easy to fill the air chambers. Large enough to hold all your normal clothing included shoes in watertight compartment. Towing strap included. buoy 50 x 35 cm. 2 strong handles to hold on to in case of emergency like cramp or exhaustion where you need buoyancy to stay afloat.