For radical and fast surfing, these fins will give you exceptional speed and energy. The fins are designed for hollow waves and powerful beach breaks. Ideal for high performance boards with deep concaves and pronounced rockers. Available in size S (55-70kg), M (65-80kg), or L (75-90kg). Performance Core (PC) fins are manufactured using a multi-layer resin transfer molding process. The flex pattern of the PC fins gradually extends from the base to the tip, helping the surfer maintain drive and heading stability during a turn. This versatile material is lightweight and can be used in a variety of different conditions.