NRS Coil SUP Leash 9js. The NRS SUP Board Leash features a tightly coiled line that stays out of your way when you don't need it. Great for flatwater stand up paddling. The lightweight coiled leash stretches to allow full freedom of movement while staying out of your way when you're in the action. The relaxed coil is only 20" long but extends to 11 1 2' (138"). Two in line swivels keep the leash from tangling up. 2" wide padded calf strap provides all day comfort. Secures with a hook and loop closure. Included lanyard allows easy attachment to the leash plug on a rigid SUP board. For River SUP, choose the NRS Quick Release SUP Leash.