The FCS II H4 looks and surfs different to any other fin. Precision Swiss engineering matched with a highly evolved template provides an unprecedented level of control and predictability at high speeds. Radically different side & centre fin templates create a powerful fin set with ultimate speed & drive. #FCSII #H4 #ThinkSpeed Geometry Side fin profile: Lower section produces maximum acceleration, while hatchet like tip creates stability & control. Center fin profile: Highly raked elliptical outline reduces drag, and offers feeling of predictability when releasing through turns. Fin foil template: Thicker base with tapered tip optimises flex & regulates the release of energy during rail to rial transitions. Material New Construstion Precision Swiss Engineered: Creates perfect synergy between fin geometry & HI-FI materials, giving smooth & predictable feel. High density uni-Directional Carbon Fibre: Light & super strong with custom orientation to transfer more of your energy into speed than any other fin. Dynamic trailing edge: Internal composite morphs under extreme load, enabling the fins to be pushed harder without sliding out. Innovative production: Highly specialised robotic automation combined with camera assisted quality control, ensures absolute accuracy. Ideal Conditions A wide range of conditions, particularly good in critical overhead waves. Board Types Recommended for performance shortboards with moderate-to-low rocker.. Fin Family Accelerator: Find Control. Speed, flow and response with added control. Size Medium (65Kg - 80Kg / 145 - 175 Lbs)Large (75Kg - 90Kg / 165 - 200 Lbs)