The Pro-Lite Freesurf 10' Surfboard Leash. The 10'0 Freesurf series surfboard leashes are designed for small, medium to overhead waves. With a 7mm cord thickness, this leash is a step up from our comp leash for when the waves start to pack a little more punch. A good option for a variety of conditions. Features include double stainless swivels to keep the leash spinning smoothly and a recessed horn to reduce the pull on your ankle. Worried about somebody watching you hide your key in the rocks? Stash it in the hidden ankle cuff key pocket.