True Ames Greenough 4-A Single Fin Best Selling Vissla has some of the

Vissla has some of the best team riders in the surf industry

Offering reliable protection from the ruthless cold

not the inside

Designed with speed

True Ames Greenough 4-A Single Fin Best Selling Vissla has some of theThere is a reason the True Ames Greenough 4 A Single Fin is the most iconic, functional and versatile single fin available it works on just about anything! The Greenough 4 A has been True Ames' bread and butter for over 40 years now, and it is still the most popular single fin design there is. Fin Size Detail Size Height Base Area 6. 5" 6. 49" 5. 42" 22. 86" 7. 0" 7. 09" 5. 67" 24. 89" 7. 5" 7. 55" 5. 95" 26. 86" 8. 0" 8. 11" 6. 09" 28. 85" 8. 5" 8.