Greenough 4A 9" Red SUN SCREEN Slight belly in the nose

Slight belly in the nose

Our keel has a super clean outline and 80/20 foil for minimal drag and speed down the line

You'll be surprised at how often it finds its way into your daily tasks

Emergency Blanket

and wearability

Greenough 4A 9" Red SUN SCREEN Slight belly in the noseThere is a reason this is the most iconic, functional and versatile single fin available it works on just about anything! The Greenough 4 A has been our bread and butter for close to 40 years now, and is still the most popular single fin design there is. A truly well balanced fin the full base coupled with the tapering, moderately flexible tip provides a solid amount of drive off the bottom, and an acute responsiveness through arcing turns. Designed