Every surfer should have at least one if not all of these fins in their quiver. FCS ARC Performace Core Tri Fins are all stamped with a seal of approval and feature a proven design known for exceptional drive and maneuverability. The FCS ARC Performace Core Tri Fin Set has a large base and a small swept tip while a smaller center fin delivers the perfect combination of hold, drive, and maneuverability. The ARC fins are GREAT for long arcs, down the line surfing, or in boards with wider tails and a lot of rocker. A must have for medium to large surfers. Performance Core (PC) material and construction is designed to deliver the feeling of a traditional glass fin with the added performance of reduced weight, resulting in a lightweight fin with remarkable flex, a smooth feel and an impressive aesthetic.