The SUP Calf leash provides protection to keep you attached to your board while providing a quick means of recovery. Dakine relies on its longtime heritage as a surfboard leash brand founded in 1979 in the production of the SUP Calf Leash. This high quality 5/16-inch Dura-Cord leash is intended for up to double overhead surf with Easy Clip compatibility. Additional features include a 1.5-inch molded neoprene calf cuff, marine grade stainless steel swivels and durable Opti-Flex leash ends. The SUP Calf Leash is offered in both 10- and 12-foot lengths. 2 Year Limited Warranty Surf up to double overhead intended use 5/16" (8MM) highest quality urethane Dura-Cord for maximum strength 1.5" (40MM) molded neoprene calf cuff Posi-Lock hook & loop closure Redesigned molded Opti-Flex leash ends for maximum durability 100% marine grade stainless steel swivels 1" (25MM) detachable railsaver Easy Clip compatible for maximum safety