Al Merrick's 'AM' shaper fin in ultralight AirCore designed for radical, progressive surfing. The raked side fins produce exceptional speed and drive, while the smaller centre fin on the medium and large template offer quick release through turns. Geometry Merrick's template has a high degree of sweep with a narrow elongated tip. Flat foil side fins, smaller centre fin (medium size). View the FCS Fin Data page for Base/Depth/Area/Foil information. Material Performance Core Performance Core (PC) fins are made using a multi-layered resin transfer molding process. The flex pattern in PC fins extends progressively from the base through to the tip, helping the surfer to maintain drive and hold through a turn. This versatile fin material is light, and can be used in a variety of different conditions.. Ideal Conditions Hollow steep waves, punchy beach breaks. Board Types Performance boards with deep concaves and moderate-to-extreme rocker. Fin Family Carver: Powerful, drawn-out turns with added hold. Size Small (55Kg - 70Kg / 120 - 155 Lbs)Medium (65Kg - 80Kg / 145 - 175 Lbs)Large (75Kg - 90Kg / 165 - 200 Lbs)