This Kids Rainbow Mermaid Swimsuit Set turns pool time into an underwater adventure — halter bikini top with tiered ruffles, matching bikini shorts, and a full swimmable mermaid tail with side zip. All three pieces feature the same rainbow gradient scale print (purple through blue, turquoise, yellow, pink, coral), and the pointed tail fin has a holographic striped finish that catches the light when she swims. Comes with a black monofin that slides into the tail pocket for proper mermaid propulsion.

What's in the Box

Halter-neck bikini top (adjustable ties, tiered ruffle design)
Mid-rise bikini shorts (elastic waistband)
Mermaid tail with side zipper (waist to fin)
Black monofin (inserts into tail fin section)

Perfect for pool parties, beach days, mermaid-themed birthdays, swimming lessons with a fantasy twist, or backyard dress-up. She can wear the bikini set on its own for regular swimming, or zip into the full tail when it's time to make waves. The monofin keeps her legs together and gives her the push she needs to glide through the water like a real mermaid.

Parent FAQs

What size should I order?

The bikini top and shorts have stretch, and the tail waist has elastic give. If your child is between sizes, we'd go up — the tail needs to slide on comfortably over hips. Halter ties adjust at the neck for a secure fit.

Can she actually swim in this with the monofin?

Yes — the monofin turns the tail into a swimmable costume, and it's designed for pool use. That said, she'll need to be a confident swimmer already (legs-together dolphin kick takes practice), and adult supervision is essential. The monofin keeps both feet in one flipper, so it's not for beginners still learning strokes.

Care: Rinse in fresh water after swimming (chlorine and salt can fade the print). Line dry out of direct sun to keep the rainbow colours bright.

Kids Rainbow Mermaid Swimsuit Set - 3-Piece Tail Costume with Monofin