Green Keiki (child size) Mermaid Monofin Green Our monofin is available in

Our monofin is available in 10 colors and in 2 sizes

you'll need the right mermaid tail

The Keiki (child) monofin is 18

And after it has done its job as a learning aid

Our Aurora Borealis mermaid tail skin is one of the most popular patterns in our collection

Green Keiki (child size) Mermaid Monofin Green Our monofin is available inDid you know? Keiki means "child" in Hawaiian. It's pronounced kee kee. :) The Keiki monofins are for use with our M, L, and XL mermaid tail sizes. Our patented mermaid monofin (swim flipper) is the best monofin available (US Patents 9561401 and 9925416). Not only does it help you swim like a real mermaid, it keeps feet from sliding around, is so comfortable to wear, and won't break. Unlike other monofins, our swim fins do not require any babying. You