Searacer 7mm(1/4") Thick 10' Blue Urethane Coiled Surfboard and SUP Leash For Paddleboard & Surfboards with Double Stainless Swivels 1) Quality urethane coiled cord ; 7mm10ft ,cuff 50mm, rail saver 30mm. 2) NO LEASH DRAG - The coiling of this leash eliminates leash drag totally (so no risk of snagging submerged objects) and keeps your leash up on the back of your board and out of the water. 3) UV stabilized. Designed to return slowly - will stretch to 8 times original length; 4) High Density Neoprene padded ankle cuff is super comfortable and won't slide around on your ankle. Store your key in the secure key pocket in the cuff. 5) Stainless steel double swivel system prevents your leash from tangling and wrapping around your legs.