Up to double overhead intended use 1/4" (6.5mm) highest quality urethane Dura-Cord for maximum strength 1.5" (40mm) molded neoprene ankle cuff Posi-Lock hook-and-loop closure Opti-Flex leash ends for maximum durability 100% marine-grade stainless steel swivels 1" (25mm) detachable railsaver Easy Clip compatible for maximum safety.