FCS II Pyzel Tri Fin Set The longer base and narrow, tapered tip injects some critical elements for surfers who like to drive hard off the bottom and get the fins free off the lip. Ideal Conditions Like a typical All-Round fin, the JP feels reliable in different waves and boards. It's fast and loose with an underlying feeling of control, that’s not overbearing. Board Types Designed to fit the FCS II Fin System. High-performance shortboards and hybrid models with wider tails and lower rockers. Fin Family Performer: Find Balance. A balance of speed, flow & response. Sizing Medium (65Kg - 80Kg / 145 - 175 Lbs) Large (75Kg - 90Kg / 165 - 200 Lbs)