FCS2 H4 Surfboard Fins Tri Fin Thruster Fin M 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. The H4 achieves higher control performance by researching water flow, in addition to the speed and drive performance of the conventional series. The fins themselves are stiff, allowing for quick response and agile action, and also have high-performance specifications that provide 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. The advanced template, based on high-precision Swiss engineering, provides unprecedented levels of control and freedom at high speeds. 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 axe-like tip creates stability and control. CENTER FIN: The high-rake elliptical outline reduces drag and provides predictability when releasing from turns. FIN FOILS TEMPLATE: A thicker base with a tapered tip optimizes flex and adjusts the release of energy during the transition from rail to rail. ■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