Red Keiki (child size) Mermaid Monofin hero which is why we send

which is why we send you the perfect size fin with the tail size ordered

This bikini set matches our Hawaiian Rainbow mermaid tail with beautiful 3D scales

and realistic

The monofin is great for teaching yourself how to flit through the water like a fish

providing more comfort and durability

Red Keiki (child size) Mermaid Monofin hero which is why we sendDid 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