Kelly Slater's signature fin for hollow waves and tight pocket surfing.

Glass Flex has been formulated to replicate the flex and memory properties of hand laid fiberglass.  Its advantages over other composite fin materials include stiffness, a more positive flex pattern (nice tip flex, little base flex) and remarkable flex memory.  The precision of the injection moulding process ensures the highest accuracy in geometry in each fin produced.

Side Fins:
Base: 4.33in.
Depth: 4.53in.
Area: 15.23sq.in.

Center Fin:
Base: 4.28in.
Depth: 4.41in.
Area: 14.22sq.in.

All FCS fins can be ordered as singles. If you do not find the one you are looking for - email us and we'll get you what you need.