Greenough 4A

Old George knew his onions when he designed the 4A, has to be one of the best and most popular fins of all time amongst the fin cognocenti, if you are a bit unsure of what fin to go for then this could be it, the fin that all others are measured against. Greeeeen O!

(Not sure what the 1A, 2A or 3A were like but the 4A rocks)

(Edit: thought this post seemed familiar, said the self same thing in November, must be true then)