What's in the Box

Halter bikini top with tie-back straps
Brief-style swim bottoms
Swimmable mermaid tail with side zipper
Black rubber monofin

This Kids Mermaid Swim Tail Costume turns pool days into underwater adventures. The three-piece set includes a halter bikini top, swim briefs, and a full-length tail with an iridescent scale print in blue-purple-pink gradient. The tail's side zipper makes it easy to slip on over the monofin.

The tail fabric has a textured scale pattern with metallic sheen that catches the light underwater. The monofin slides into the fluke end for proper swimming propulsion. The halter top ties at the neck and back, and the stretch swim fabric moves with your child in the water.

Perfect For

Pool Parties & Beach Days: A standout pick for birthday pool parties, resort holidays, or beach photoshoots where she wants to make a splash.

Dress-Up Play: Works just as well for dry-land mermaid play in the backyard, princess costume rotations, or imaginative ocean-themed games at home.

Themed Events: Perfect for under-the-sea birthday parties, Halloween trick-or-treating, school costume days, or any event where a fantasy character is welcome.

How to Wear It

Slip the monofin on first, then step into the tail and zip up the side. Tie the halter top at neck and back. For first-time swimmers with a monofin, supervise closely in shallow water until she gets the dolphin-kick motion down.

Parent FAQs

Q: What size should I order?

A: Check the size chart for tail length and chest measurements. If your child is between sizes, size up — the stretch fabric gives flex, but a too-short tail won't cover the monofin properly.

Q: Can she actually swim in this?

A: Yes, the tail is designed for water use with the included monofin. That said, swimming with a monofin takes practice — keep her in shallow water with supervision until she's confident with the dolphin kick.

Q: How do I wash this? Will the metallic print fade?

A: Rinse in cool fresh water after each use (chlorine and salt can dull the sheen). Hand wash with mild soap, lay flat to dry, avoid wringing. The print holds up well with gentle care.

Q: Is this suitable for a pool party with other kids?

A: Absolutely. It's a proper swimsuit underneath the tail, so she can take the tail off and swim normally if she wants a break. Pack it in a mesh bag for easy transport.

Care: Rinse after each swim, hand wash, air dry flat. Avoid machine wash and tumble drying.

Kids Mermaid Swim Tail Costume - 3-Piece Bikini Set with Monofin