Swim Trainer is the original revolutionary fitness product providing swimmers with a continuous and vigorous workout in any size pool. The Swim Trainer swimming tether turns backyard pools into 'Liquid Gymnasiums' while giving the smallest of pools 'unending length'. Constructed of Bungee cords for elasticity, neoprene for comfort and two Velcro straps, Swim Trainer allows swimmers the freedom of movement to perform nearly any swimming stroke and kick while kept comfortably in place. Swim Trainer is also great for aqua-aerobics, resistance stretching, aerobics and rehabilitation.