A stainless steel D-ring at the end of the leash lets you change the attachment hardware depending on your lifevest choice When wearing a Zen or other rescue PFD, detach the shackle from the leash, hook the carabiner through the D-ring on the leash and the D-ring on the quick-release belt of your lifejacket Secure the leash to an inflatable SUP with the hook-and-loop closure through a D-ring; includes lanyard to loop through leash plug on rigid SUPs Two in-line swivels keep the leash from tangling Coiled section keeps the leash out of your way when paddling but can be stretched to reach 9' NRS Quick-Release SUP Leash - The NRS Quick-Release SUP Leash works with rescue and recreational PFDs, allowing paddlers to safely stay connected to the board when necessary and quickly disengage from the leash and board during a bad swim.