Helping you tow with more efficiency in rescue situations, the NRS Tow Tethers have a built-in bungee and a stainless steel O-ring to secure to a PFD. The stainless steel O-ring includes a hook patch of hook-and-loop material that facilitates centering it on life vests that feature the mating loop material on the back, while the tether also has a hook patch on the carabiner end to mate with a loop piece that comes with some rescue PFDs, forming a quick-release holder for the carabiner.