FCS2 H4 Surfboard Fins Tri-Fin Thruster Fins S Size Supervised by Mick Fanning. "H Series" The latest model in the H series, familiar to surfers who use FCS fins, is the "H4". This fin was developed under the supervision of 3X World Champion Mick Fanning. In addition to the speed and drive performance of the previous series, the H4 achieves higher control performance through further research on water flow. The fins themselves are stiff, allowing for quick response and agile action, and also have high-performance specifications that combine drive performance. Mick, whose high-speed surfing is synonymous with him, was involved in the development for several years, creating a new fin that can handle modern surfing. -H4 TRI- The LOOKS and SURF of the H4 are completely different from other fins. Unprecedented levels of control and free high speeds are made possible by an advanced template supplied by high-precision Swiss engineering technology. The H4 responds sensitively to intuitive movements. The H4 will give you a great response when you need speed and when you want to release the fin at the right transition point. Absolute precision is guaranteed by highly specialized robotic automation. SIDE FIN: The lower section generates maximum acceleration, and the hatchet-like tip creates stability and control. CENTER FIN: The high-rake elliptical contour reduces drag and provides predictability when releasing from turns. FIN FOILS TEMPLATE: A thicker base with a tapered tip optimizes flex and regulates the release of energy during the transition from rail to real. ■Material■ Engineered Composite + Carbon Tape Type...Fins Fin System/Fin Box...FCS2 Number of Fins...Tri-Fin Surfing Longboard Shortboard SUP Stand Up Paddle Paddleboard Windsurfing Kitesurfing Wing Foil Wakeboard Jet Ski Marine Sports Diving