The GMB-5 Quad is Matt 'Mayhem' Biolos's signature Quad set. G-1000 template in the rear provides a balance of drive versus maneuverability. Great for hollow beach and reef breaks. It is a large fin with 165lbs-200lbs being the optimum weight range.

Performance Core material and construction is designed to deliver the feeling of a traditional fibreglass fin with the added performance of reduced weight. The RTM (Resin Transfer Moulding) process produces a lightweight fin with remarkable flex, a smooth feel and an impressive aesthetic