The Tech 1 honeycomb hexagonal core combined with the Al Merrick template offers a medium flex pattern, making this fin a versatile option for a wide range of surfing abilities. Tech 1 is designed to perform in a variety of conditions and has a wide base for drive off of the bottom, more rake for big carves, and a finer tip for release off of the top. The signature CI smaller center fin frees up the tail. Construction: Polyester resin and fiberglass construction. Unique core reduces resin content and weight. Proprietary fiberglass weave and orientation is designed for maximum response and performance. Versatile high performance option.