SBS Leash String Cord for Surfboard, Longboard and SUP - 4 Pack WE LISTENED: Starting May 2015 Our Strings Are Now 25% Thicker, 4mm (.160") UNIVERSAL FIT: Works on shortboards, longboards, stand up paddleboards (SUP) and inflatable paddle boards (iSUP) SUPER STRONG: 550lb load rating, pre-cut to right length and easy to tie. MADE IN THE USA: FREE STICKER INCLUDED PROTECTS YOUR BOARD: Used properly, will keep your leg rope from dinging your board. The leash attachment strap will allow your railsaver to rest on the rail, not your leash cord. Must have for your surf board or paddle board.