TheáStrechCordz Safety Long Belt Slider was improved for safety and comfort.áUsed for adding resistance to swimming, the Long Belt Slider is StrechCordz's number 1 in-water resistance product.áIt provides swim out and pull-back resistance to improve strength and stamina.áAccelerate quicker, strengthen the finishes of each stroke and improve your times.áA proprietary, embedded safety cord runs the full length of the tubing and acts as a limiter to help prevent over-stretching. The StrechCordz Safety Long Belt Slider features a 2-in/5 cm waist belt that fits up to a 44-in/1.1 m waist, padded for comfort and connected to 20 feet/6 m of latex with safety cord tubing and sliding attachment that moves freely around the belt for unrestricted movement. Used in either 25yd or 25m pools. Yellow has 5 - 14 lbs if resistance.