All FCS leashes are designed to offer superior comfort functionality and dramatically increased strength. Each leash feature innovative design elements and the highest quality materials available. The extensive research and development program at FCS involved rigorous testing to ensure each leash delivers outstanding performance. :: Unisex > Surf Accessories. Smooth rotating nylon cuff and rail saver swivel assemblyMachine stainless steel swivelsKey pocket7 mm thick cord8ft in lengthFCS brandingQuick release pull tagSuitable for 2-8ft wavesInterchangeable strap Size: one size.