Made from 100% floating rubber, the FCS Hydro Fins are perfect for bodyboarding and surf swimming. The patented V Rail Design helps you to get the most from these fins, creating more surface area to allow for maximum speed and traction. The symmetrical design of these fins gives you more time on the water with less strain and a lower risk of injury. With drain holes to flush out water and sand, and a contoured ankle strap these fins ensure maximum comfort without impacting performance. Whether you're new to bodyboarding or you're an experienced surf swimmer, the Hydro Fins will definitely make your time in the surf more exciting. Features V Rail Design for maximum speed and traction. Drain holes ensuring water & sand are quickly flushed. Contour Ankle strap designed to ensure maximum comfort. Perfect for bodyboarding and surf swimming/bodysurfing The Hydro V Rail Hydro's patented V Rail Design creates more surface area to increase kick thrust. The fins' symmetrical design eradicates leg twist motion allowing longer surfs and less strain/injury to the user. Combine all this with its comfortable foot pocket, and it's no wonder waterman all over the world have been choosing to use the Hydro Original Fin for decades.