FCS PC-5 Graphic Tri Fin Set.Made from a Resin Transfer Moulding process, these fins were built to feel like traditional fiberglass fins with increased performance and flex. This lightweight template adds a unique plaid graphic to the same reliable and proven design of the original PC-5’s. Optimum weight range for this size M set is: 143lbs - 176lbs (64.8kg - 79.8kg). A perfect setup if you’re looking for a renowned, high performance design with excellent drive, pivot, and hold all across the board. FCS.