Red Keiki (child size) Mermaid MonofinDid 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

Sizes from Child XS  to Adult JXL

no returns

Teen/adult sizes JS - JL will automatically receive a Nunui sized fin

-Comfortable premium swimsuit fabric with 4-way stretch (80% Polyester

Ultra-soft and comfortable with flattering fit great for everyday wear

-Monofins and matching bikini swimsuits sold separately

The Little Mermaid

Our products are built to last

For child sizes M

and realistic

stronger swimmers who just want to play shark in the pool

1-Year Warranty – free replacements for rips