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Seven Seas Mermaid Tail + Monofin Set

Size Chart Size Chart Size Chart Regular price $69.95 Sale price

Compare at $105.95

Following the rainbow is easy with our Seven Seas mermaid tail and monofin set. This colorful option is a wonderful choice for yourself or for your child who wants to become one with the sea. These realistic tail sets allow you to swim like a real mermaid, whether that be in the pool or in the ocean. Just like real mermaids, our tails shimmer and offer an ethereal glow in the water. Whether you choose to wear these for photoshoots or take your mermaid swimming to a professional level, our Seven Seas mermaid tail and monofin set is a great choice. Choose your tail size and we'll provide the right monofin.

  • Child sizes M - XL will come with a Keiki sized fin.
  • Teen/adult sizes JS - JL will come with a Nunui sized fin.

Monofin included


Seven Seas is a brilliant and vibrant mermaid tail design inspired by rainbows. With a spectrum of color, it looks great with almost any of our monofins, but we package it with our favorite combo: blue.

Comfort and Quality

Our realistic scale mermaid tails are made from 80% polyester, 20% Elastane (spandex) material with 4 way stretch. The swimsuit material is very comfortable and works well for swimming, or as a mermaid costume.   

Size Chart Fabric and care instructions

Who We Are

Sun Tail Mermaid is an American company that makes the best mermaid tails for swimming - how fun is that? What started out as a Kickstarter product is now a multi-family business. Our products are built to last, comfortable to use, and we have the best prices around. Here are our store policies.


Customer Reviews

Based on 13 reviews
I'd rather not say my name

I'd like to get my 4 year old sister a rainbow tail this one would be perfect but.......the size! We would love to have smaller sizes for younger ones just so they can float and splash in the kiddie pool , I'd love to see my baby sister in a mermaid tail she would be soooooo happy a big bright smile on her tiny face she's laughing so happy!!! Unfortunately they don't have the size for a 4 year old.......she probably would be able to learn at a very young age! She has confidence, bravery, innocence, and sisters! I would especially love to help her!

We have smaller sizes, check our toddler tails page :)

Jenni B
Audrey's mermaid grandmas

My sister was ready to buy a youth and adult set of monofin + tail for her grandaughter's 9th birthday, however; she was tragically killed 10 days before. So my sister and I instead decided to each still purchase a set (size 12-14 stretches all the way to 16-18 if you need to know) and we LOVE them. they fit great, hold up to tugging and pulling (we aren't as flexible at 54 and 56!) and make us feel graceful and sleek. Product is the quality listed! we put the tape on the corners as directed for longer life/warranty purposes. We have been swimming now for 2 weeks and love them! Mermaids are in Heaven too!

chelsea lynn Schexnayder
MERMAID happiness

My daughter loves this gift we bought her I love it cause as a kid I always wanted a tail like the movie the little mermaid an to fulfill that dream for my daughter is PRICELESS!!!!!

Kimberly Pemberton
We love it, and everyone that has seen it is asking where did we get it!!

My daughter Selene Elise and I absolutely love the Rainbow Sun Tail and the monofin!! Both are good quality. So many parents at the community center and at her 77th birthday party asked where did we purchase it. I shared the research I had conducted comparing the noted top brands, and why I chose Sun Tails over all of them. Selection of colors, waistline fit, durability of monofin, and price led me to Sun Tails, and we are so pleased!! Thanks Sun Tails!!

my 8 year old love it!

Great product! One you get it on works great. Stays on well.