Greenough 4-A ( Volan )

The Greenough 4-A Single Fin is the most iconic, functional, and versatile single fin out there — works great in eggs, and longboards. It's been True Ames' bread and butter for over 40 years, and it's still the most popular single fin design around because nothing else balances all-around performance quite like it.

This one's built in Volan fiberglass, fine-tuned with precision foils and just the right amount of flex. Every fin is a labor of love, hand-laid and templated under the strictest quality control so the weave orientation lines up right and the strength is all there. The flex comes from the body of the fin, not just the tip — which means more speed and projection off the bottom and through your turns. It's Volan construction at its highest performance level.

• Volan fiberglass construction, hand-laid and templated for optimal weave orientation and strength
• Precision foil with flex engineered through the body of the fin, not just the tip
• Enhances speed and projection off the bottom and through turns
• The most versatile, best-selling single fin design for over 40 years