FCS Fins FCS II Performer PC Tri Set SIZE: MEDIUM (65 - 80Kg / 145 - 175 Lbs) These fins offer excellent balance in all aspects. Suitable for all conditions. ◆PERFORMANCE CORE (PC) Performance Core (PC) fins are constructed with a material and design that allows for weight reduction while retaining the feel of traditional fiberglass. This series is very flexible and lightweight, offering a smooth feel and a highly polished design. *These are used items, but they are still in good condition and can be used for a long time. Please consider this before purchasing.