$54.99 USD


Glass Flex  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 molding process ensures the highest accuracy in geometry in each fin produced.


Fin Specs  Base: 4.37" / Depth: 4.55" / Area: 14.81in² / Sweep: 33.7˚


Inside Foil Technology (IFT)  A sophisticated hydrodynamic foil consisting of a convex outside face, a rounded leading edge, and a concaved inside face. Inside foil increases the efficiency of water flow over the surface of the fin adding lift and reducing drag. The result is a fin with more options through increased hold and speed.

A Balance of Speed, Flow, and Response in a Variety of Conditions

For Surfers Who Want a Reliable "All Round" Fin  Delivers a combination of speed and maneuverability with flow between turns.

Board Types  All board types, including fish, funboard, and twin fin boards.

Ideal Conditions  A wide range of conditions from beach breaks to point breaks.

FCS II Fin System  This fin is designed to be used exclusively with the FCS II Fin System, and will not fit in the traditional FCS Dual Plug System.


3 Fins


  • Material:Polymer
  • Fin Category:Thruster (Tri)
  • Fin Box Compatibility:FCS II
  • Includes:3 Fins
  • Rider Size:M (145 - 195 lbs)
  • Warranty:1 Year
Size Medium
Rider Size M (145 - 195 lbs)
Base (in) 4.37
Base (mm) 111
Depth (in) 4.55
Depth (mm) 115
Area (in²) 14.81
Area (mm²) 9554
Sweep (°) 33.7

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