- Age 3-4 - $45.09
- Age 4-5 - $45.09
- Age 5-6 - $45.09
- Age 6-7 - $45.09
- Age 7-8 - $45.09
- Age 9-10 - $45.09
Kids Swimmable Mermaid Costume - 3-Piece Tail Bikini Set with Monofin
DELIVERY
- Dispatch: Within 24 Hours
- Registered & Express Post for ALL Orders.
- Pick up is available.
- Easy 14 days returns and exchanges
RETURNS
If you do not like the product you can return it within 14 days - no questions asked. This excludes stockings, gloves, swimwear and clearance sale items. We have an easy and hassle-free return policy. Please look at our Delivery & Returns section for further information.
PRODUCT DETAILS
What's in the Box
- Halter Top Bikini (stretch material)
- Pants with Swimmable Tail (zip on the side)
- Black Monofin
This Kids Swimmable Mermaid Costume turns pool days and beach holidays into under-the-sea adventures, with a halter bikini, matching high-waisted bottoms, a full-length zippered tail, and a monofin that lets your child actually swim. The turquoise-to-blue gradient mimics ocean depths, and the embossed scale texture catches the light with every move.
The tail's side zipper makes getting in and out easy, even when wet. Iridescent purple-and-blue fins at the fluke create realistic movement in water, and the halter top's ruffle neckline with bow jewel detail adds a fairytale touch. Stretchy swimwear fabric means your kid can splash, dive, and play without restriction.
Perfect For
Beach Holidays & Pool Parties: A standout at resort pools, backyard swim parties, or any seaside holiday where your child wants to make waves as a mermaid.
Mermaid-Themed Birthday Parties: Perfect for under-the-sea birthday bashes, swimming lessons with flair, or costume pool parties where kids want to be mermaids all afternoon.
Book Week & Storybook Dress-Up: Pairs with any mermaid storybook character — from classic fairytales to modern ocean adventures — for kindy character parades or school dress-up days.
How to Wear It
Wear the bikini set underneath the tail for full coverage, slip feet into the monofin, then zip the tail closed at the side. For walking on land, unzip the tail and carry it, or shuffle mermaid-style for effect. Pair with a shell necklace or starfish hair clip for extra ocean magic.
Parent FAQs
What size should I order?
Check the size chart for chest and waist measurements. The stretchy swimwear fabric has some give, but if your child is between sizes and wants room to grow, size up.
Can she actually swim in the tail, or is it just for dress-up?
She can genuinely swim — the monofin fits inside the tail's fluke and provides propulsion, like a dolphin kick. Supervise in water as always, and practice in shallow areas first until she's confident with the mermaid movement.
How do I wash this? Will the iridescent fins hold up?
Hand wash in cool water and hang dry to protect the iridescent fin material. Avoid wringing or twisting the tail — lay flat or drape over a line to dry.
Is this suitable for saltwater and chlorine pools?
Yes, it's designed for both beach and pool use. Rinse thoroughly after each swim (especially saltwater) to keep the fabric and fins looking fresh, and the colours will stay vibrant for many swims.
Care: Hand wash cool, hang dry. Rinse after saltwater or chlorine.
SHIPPING & RETURNS
Returns Policy
We have a 14-day return policy, which means you have 14 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at sales@kidsbookweekcostumes.com.au.
If your return is accepted, we’ll send you a return form, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
Shipping
We offer Flat Rates $9.8 for Registered Post or $14.8 for Express Post within Australia.