Churchill® Makapuu® Swim Fins The Churchill® Makapuu® floating fins are patented and trademarked swimfins that have been setting the standard for excellence since 1936. Crafted from 100% natural gum rubber, each fin is meticulously inspected for quality to ensure maximum durability and performance. Inspired by the natural movement and speed of a dolphin's tail, the Makapuu® swimfin provides unbeatable thrust and power in the water. Experience the ultimate in performance, comfort, and style with the iconic Churchill® Makapuu® Floating Fins. Unsure which fin size to get? Check out our size guide .