Designed for competition use, the Gorilla Classic Comp Surfboard Leash reduces drag with its 5. 5mm polyurethane cord that optimizes strength, stretch, and elasticity. Stainless steel swivels along the cuff and rail saver prevent the leash from tangling. Preventing the cuff and rail saver from detaching during fast paced maneuvers, the Rip and Grip cuff closure offers an extra secure closure. Additionally, the high density neoprene cuff features 360 degree flexible material to conform to your ankle without pressure points. Plus, there's an internal key pocket for storing keys and cash while you surf.