Made since 1936, the Patented and Trademarked, Churchill Makapuu® Floating Fins, have become standard equipment in performance bodyb boarding and are also the original swimfin. Each natural rubber fin is individually inspected for quality. The Makapuu® fin was created to resemble a dolphin tail, which will give you the most thrust and performace out of any fin on the market. The Makapuu® fin is made of 100% natural gum rubber and they float! read our 'about churchill®' for more information!