Creatures of Leisure Longboard 9 Knee Surf Leash Surefire Leash release system Dna flex mold allows minimum breakage with up to 5X original stretch length Leash lock is lighter and 50% stronger than traditional Velcro 2 year Warranty Stainless steel bearing swivel is an unbreakable, Self lubricating swivel that produces continuous friction free motion and eliminates Leash tangles