Fin Lab

How fins
work

Your fins are the engine of your board. Change the fin, change the ride. Here's what to look for.

Constructions

What it's made of

Instant snap

Unidirectional carbon over a light core. Minimal flex, maximum energy return. For powerful surf and precise surfers.

Shop Carbon →

Light & lively

A hexagonal core between glass skins cuts weight while keeping a springy, responsive flex pattern.

Shop Honeycomb →

Smooth & forgiving

Solid glass layup with a predictable, progressive flex. The all-rounder that suits most surfers most days.

Shop Fibreglass →

Natural feel

A paulownia core gives a damped, organic flex — loved in twins and keels for its drawn-out, flowing turns.

Shop Wood Core →

Templates

Base: Length where the fin meets the board. Longer base = more drive and speed.
Depth: How far the fin reaches into the water. Deeper = more hold, shallower = looser.
Sweep / Rake: How far the tip swings back. More rake = drawn-out turns. Less = tighter pivots.
Foil: The fin's cross-section. Flat-inside foils are fast; 50/50 foils are balanced and smooth.
Area: Total surface. More area adds control and drive; less adds release and speed.