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ergonomic seam placement
• D-rings on nose and tail
consisting of a hollow core
WarmFlight® ECO VELVET zoned thermal lining
Made for colder water: 44 - 53° F / 8 -12 C
Greenough 4A Longboard Fin 8" Kelp Books ergonomic seam placementThe Greenough 4 A Single Fin is the most iconic, functional and versatile single fin available, because it works extremely well on just about every type of surfboard. The 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 due to it's all around and well balanced performance. MATERIALS & FITMENT CONSTRUCTION Solid Fiberglass FINISH Matte FITMENT Single Fin Box APPLICATION Screw +