Futures Fins Alpha Thruster Surf Fins Features:The John John Florence Alpha fin is a medium sized Balanced fin with a Ride Number of 5.5. It is the same template that JJF rode to the WSL World Championship in 2016 and that has been a global best seller since the initial release. The C6 material and flat foil make this fin predictable, yet more lively in softer surf. All Alpha products are designed and manufactured exclusively in Huntington Beach, Ca USA. Item # 1055-326-00