Whether your weekend plans include lazy summer floats down small rivers, or bobbing around in your local lake, the River Rat Tube will fit your needs and keep you afloat for hours of fun. Constructed of SUPER-TOUGH™ vinyl – a high molecular PVC formulation that is highly resistant to damage from abrasion, impact, sunlight and also permits more air pressure for firmness. A smooth inner seam keeps your skin from being cut or scratched. Two air chambers with double valves. All-around rope for easy handling.