Matt 'Mayhem' Biolos's 'MB' shaper fin. Reliable on the open face, or in the pocket. Matt 'Mayhem' Biolos's signature template delivers a lively combination of drive, hold, and maneuverability. This versatile fin will feel reliable out on the open face or tight in the pocket. A wide range of conditions, particularly good in critical overhead waves. Designed to fit the FCS II Fin System. Performance shortboards and hybrid models. Often referred to as PC Carbon or PCC, these fins are highly responsive and feature strategically placed carbon that’s designed to complement the fin template. PCC fins suit fast surfing and are favored by power surfers who like to perform explosive turns on critical parts of the wave.