The Churchill Makapuu Floating Fins are one of the most top rated bodyboard fins, and utilize a patented construction called dolphin design which gives you optimum power and acceleration for catching and riding waves Makapuu fins also act like a skeg on a surfboard to help maintain total control. The rubber covering your foot is soft for complete comfort while the rubber found on the blade is stiff for more kick power. Invented in 1936 and weighing in at 3 lbs, the makapuu bodyboard fins are the best and most trusted on the market.Extra-Small (3 - 4.5) | Small (5-6.5) | Medium (7 - 8.5) | Medium-Large (9 -10.5) | Large (11 -12.5) | Extra Large (13 -14.5)