- 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 Mermaid Swimsuit with Tail & Monofin - 3-Piece Swimmable Set
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
This Kids Mermaid Swimsuit with Tail & Monofin turns pool parties into Under the Sea adventures—your kid actually swims with the monofin, not just poses. Three pieces: halter bikini top with tiered ruffles, low-rise bikini shorts, and a fitted tail with side zipper and attached fin pocket. Holographic scale print across the swimsuit, pink-to-blue gradient ombré on the tail with star appliqués.
What's in the Box
- Halter-neck bikini top with adjustable ties and tiered ruffle flounce
- Low-rise bikini shorts with elastic waistband
- Swimmable mermaid tail with side zipper and foot pocket
- Black flexible monofin (slots into tail)
Perfect for mermaid-themed birthday parties, pool parties, beach outings, or any day your kid wants to feel like an aquatic fairy tale character. The monofin gives real propulsion underwater—supervision required for safe swimming.
Parent FAQs
What size should I order?
The tail runs fitted through the hips and thighs (needs to be snug for the monofin to work), so measure around the widest part of your child's hips and compare to the size chart. If she's between sizes and comfortable in snug swimwear, stay with the smaller size; if she prefers looser fits or is still learning to swim with fins, size up.
Can she swim safely with the monofin?
Yes, but only with adult supervision and if she's already a confident swimmer. The monofin limits leg movement (both feet go in together), so she needs to be comfortable using dolphin-kick technique. Start in shallow water. The side zipper makes it easy to get out quickly if needed.
Care: Rinse in cool water after each swim (chlorine and salt can fade the holographic print). Hand wash the tail and monofin; bikini pieces are machine-washable on gentle. Hang to dry—don't wring the tail or the gradient may crease.
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.



