Blue Keiki (child size) Mermaid Monofin Backpack Soft and smooth material is

Soft and smooth material is fully lined

you get the tail and the fin so you can kick around like a true mermaid in the pool or ocean

For the teen/adult sizes JS

it's a stunning addition to your collection

Pair your leggings with a matching Seven Seas bikini  with vibrant rainbow 3D scales or a monofin

Blue Keiki (child size) Mermaid Monofin Backpack Soft and smooth material isDid 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