The Ocean & Earth Whip Thruster fin is for Whippy turns in the pocket and sliding the tail for lighter more agile surfers.
Flex: More flex (whipper response) for the light, more agile surfers.
Ideal Waves: All types but best in beach breaks.
Thruster: Predictable / Control used in the majority of boards ideal in all conditions.
Small: Height 109mm X Base 108mm
Medium: Height 120mm X Base 112mm
Large: Height 120mm X Base 112mm