Searacer Blue 7mm (1/4") Thick 7' Urethane Cord Surfboard and SUP Leash with Double Stainless Swivels 1) Quality urethane straight cord ; 7mm7ft ,cuff 50mm, rail saver 30mm. 2) UV stabilized. Designed to return slowly - will stretch to 8 times original length; 3) Distinctive webbing and Double lined padded neoprene for comfort 4) High quality Stainless Steel Swivels 5) it can be used in Surfing, Sup, Race;