- Age 4-5 - $45.09
- Age 5-6 - $45.09
- Age 6-7 - $45.09
- Age 7-8 - $45.09
- Age 9-10
Kids Mermaid Swimsuit Costume - 3-Piece Swimmable Tail 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-style bikini top with tiered ruffle overlay
- High-waisted bikini brief
- Full-length mermaid tail with side zipper (removable)
- Black monofin insert
This Kids Mermaid Swimsuit Costume turns pool days into underwater adventures with a three-piece set that's both functional swimwear and full fantasy dress-up. The halter bikini and high-waisted brief work as standalone swimmers, then zip into the swimmable mermaid tail when your little one's ready to make waves.
The tail's the star — turquoise-blue stretch lycra with iridescent scale print, layered chiffon fin panels that catch the light, and a side zip that makes getting in and out quick even when wet. Monofin slots into the tail bottom for real swimming propulsion. Halter top has braided straps that tie securely at the neck, and the ruffle tiers give it that princess-of-the-sea look kids love.
Perfect For
Pool parties & beach days: The tail zips off in seconds so they can swim freely, then zip it back on for the mermaid entrance when friends arrive. Monofin makes underwater gliding feel magical.
Mermaid birthday parties & dress-up play: Perfect for under-the-sea themed celebrations, costume photo sessions, or backyard water play. The iridescent scales photograph beautifully.
Book Week & imaginative dress-up: Pairs with any ocean storybook character — works for mermaid tales, sea princess adventures, or aquatic fantasy parades at school or kindy.
How to Wear It
Wear the bikini set alone for regular swimming, then add the tail when it's time for mermaid mode. The side zip on the tail opens wide so it slides on over wet skin without a fight. Pair with a flower crown or seashell hair clips for the full underwater princess look.
Parent FAQs
Q: What size should I order?
A: Check the size chart for chest and waist measurements. The bikini's stretch fabric is forgiving, but the tail's length matters — you want it to reach the ankles without dragging on the ground when they walk.
Q: Can they actually swim in the tail, or is it just for posing?
A: The tail's designed for pool play with the monofin providing propulsion, but supervise closely — it restricts leg movement so they'll swim differently than in regular togs. Best for confident swimmers in shallow water.
Q: How do I wash this? Will the holographic print hold up?
A: Rinse in cold water after each swim to get chlorine out, then hand wash gently. Hang to dry — the print's durable but avoid wringing or tumble drying the chiffon tail panels.
Q: Is the flower crown included?
A: The crown shown in photos is a styling accessory to inspire the look — this set includes the bikini, tail, and monofin. Add your own floral headpiece or seashell clips for the finishing touch.
Care: Rinse after each use, hand wash cold, hang dry. No tumble dry.
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.