A SIX-FOOT SURF LEASH FOR WAVES UP TO TWO FEET OVERHEAD It's built with stout 1/4-inch (6.5mm) urethane Dura-Cord to keep you connected to your board in the strongest conditions. Dakine built its reputation on building the strongest surf leash available, and the Kainui continues the tradition. 60% TPU, 15% Polyproplylene, 10% Neoprene, 10% Nylon, 5% Stainless 6' x 1/4' [ 1.83m x 6.5mm ] Up to a couple feet 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 & loop closure Opti-Flex leash ends for maximum durability 100% marine grade stainless steel swivels 1' (25MM) detachable railsaver