- Age 4-5
- Age 5-6 - $45.09
- Age 6-7 - $45.09
- Age 7-8 - $45.09
- Age 9-10 - $45.09
Girls Swimmable Mermaid Tail Costume - Rainbow Gradient 3-Piece 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
What's in the Box
- Hot pink halter bikini top with triple-tier ruffle detail
- Matching bikini bottoms with elastic waist
- Rainbow gradient mermaid tail with side zip and black monofin
This Girls Swimmable Mermaid Tail Costume lets your kid actually swim underwater like a real mermaid — not just pose for photos. The rainbow gradient tail runs yellow-cyan-blue-purple-pink with embossed scale texture, paired with a hot pink halter bikini set that stays put during dives and splashes.
Side zip runs the length of the tail for quick on-off between pool sessions. The integrated monofin slots into a foot pocket inside the tail, giving your child propulsion through the water while the flared rainbow fin trails behind. Halter top has self-tie neck closure and elasticized band; bikini bottoms are stretchy swim-grade fabric. Scalloped scale detail across the tail catches light beautifully underwater.
Perfect For
Pool Parties & Beach Days: The standout choice for mermaid-themed birthday parties, resort holidays, or backyard pool sessions where she wants to swim, not just wade.
Dress-Up Swimming Sessions: Real swimsuit construction means she can wear this for extended play — underwater tea parties, mermaid races, synchronized swimming attempts with friends.
Book Week & Fantasy Dress-Up Days: Pairs with any ocean storybook character for school parades (Little Mermaid vibes, Rainbow Fish energy, aquatic fairy tales). Just skip the pool and she can wear it over leggings for dry-land Book Week.
How to Wear It
Slip the bikini on first, then step into the tail and zip up the side seam. Slot feet into the monofin pocket (practice a few kicks on land first). For Book Week without swimming, wear the tail over black leggings and skip the monofin — works as a walkable mermaid costume.
Parent FAQs
Q: What size should I order?
A: Check the size chart image on this listing — mermaid tails run snug through the hips and thighs for streamlined swimming. If she's between sizes or has longer legs, size up.
Q: Can she actually swim in this, or is it just for photos?
A: She can genuinely swim — the monofin gives propulsion and the tail is designed for underwater movement. Supervise closely; swimming with joined legs takes practice and isn't suitable for non-swimmers.
Q: How do I wash this? Will the colors fade in chlorine?
A: Rinse in cool fresh water after each swim (chlorine and salt both degrade swimsuit fabric over time). Hand wash with mild detergent, air dry flat. The gradient print is durable but will last longer with proper rinsing.
Q: Is this suitable for a 6-year-old's pool party?
A: Yes, if she's a confident swimmer — the monofin restriction means she needs to be comfortable in water. For non-swimmers or very young kids, save it for shallow wading or dress-up play out of the pool.
Care: Rinse after each swim, hand wash, air dry flat. Avoid wringing the tail.
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.