- Age 4-5 - $38.49
- Age 5-6 - $38.49
- Age 6-7 - $38.49
- Age 7-8 - $38.49
- Age 9-10 - $38.49
Kids Swimmable Mermaid Costume Set - 3-Piece Bikini with Tail & 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 bikini top with shell appliqué and tie-back
- Mid-rise bikini bottoms
- Swimmable mermaid tail with integrated fluke fin
- Black monofin for dolphin-kick propulsion
This Kids Swimmable Mermaid Costume Set is a genuine functional swimsuit — your child swims in it, not just poses. The turquoise scale-print bikini, slip-on tail, and rigid monofin turn any pool session into an underwater adventure.
The halter bikini top has adjustable tie-back closure for secure fit during swimming. Elasticized tail waist slips on over the bikini bottoms, and the monofin inserts into the fluke for dolphin-kick propulsion. Long vertical fringe strips on the fin create realistic flowing movement underwater. Digitally printed black-outlined scales cover all pieces for dimensional aquatic effect.
Perfect For
Mermaid Pool Parties & Beach Days: The standout piece for underwater-themed birthday parties, summer beach outings, or resort pool sessions where your kid wants to live the mermaid fantasy for real.
School Dress-Up & Book Week Costumes: Pairs with any ocean mythology book for Book Week — storybook mermaid parades, underwater character days, or school swimming carnivals with a costume theme.
Everyday Imaginative Swim Play: Doubles as regular swimwear for kids who want to be a mermaid every time they hit the water — backyard pool, local aquatic centre, or holiday beach swimming.
How to Wear It
Slip the bikini on first, then slide the tail over the bottoms and position the monofin inside the fluke. Secure the halter tie snugly. Pair with a swim cap or let hair flow loose for full mermaid effect — skip goggles if your child is confident underwater.
Parent FAQs
Q: What size should I order?
A: Check the size chart for chest and waist measurements. The tail has elasticized waist for flex, but the monofin fit is more specific — between sizes, go up for growing room.
Q: Can they really swim in this, or is it just for photos?
A: They can genuinely swim. The monofin provides propulsion for dolphin kicks, and the tail fabric allows leg movement. Supervise closely — swimming with a monofin takes practice and isn't suitable for beginners or non-swimmers.
Q: How do I wash this? Will the print fade?
A: Rinse in fresh water after pool or beach use to remove chlorine and salt. Hand wash cold, line dry in shade. The digitally printed scale pattern is durable but avoid harsh detergents.
Q: Is this safe for my child to wear in the pool?
A: It's designed for swimming, but monofin use requires confident swimming ability and adult supervision. Not recommended for shallow water, non-swimmers, or children under 6 without strong swim skills.
Care: Rinse after use, hand wash cold, line dry in shade.
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.