OneSea Mermaid 3-in-1 Children’s Buoyancy Aid Swimsuit – Ages 3-4

The OneSea Mermaid is a children's buoyancy aid swimsuit that replaces three separate pieces of kit in a single zip-up suit. The front panel houses removable EPE foam buoyancy aids, while the 84% polyester, 16% elastane fabric carries a UPF 50+ rating that blocks 98% of UV rays across the whole body. The built-in hood adds head coverage that a standard floatsuit cannot offer, and the mermaid scale print with ruffle ankle cuffs – plus a small dorsal fin detail on the hood – makes the whole thing genuinely exciting to put on. A reusable EVA beach tote bag is included, so everything goes in and out of the water bag together.

At the pool, on the beach, or in a holiday water park, carers can focus on watching the water rather than tracking down armbands, sun hats, and rash guards that have been left on sun loungers. The suit is hand wash in warm water only, and the buoyancy foam inserts lift out before washing. Sized for children aged 3 to 4 years, the front zip and stretchy fabric make dressing and undressing quick. As with all buoyancy aids, the suit does not protect against drowning and must be used under constant adult supervision.

Key Features

• 3-in-1 design: swimsuit, UPF 50+ full-body sun protection, no armbands or separate sun hat needed
• Built-in hood provides head and neck UV coverage often missed by standard float suits, plus removable EPE foam inserts slot out easily for washing
• Includes a reusable EVA beach bag; mermaid scale print with ruffle cuffs and hood fin detail makes the suit as fun to wear on the beach as it is in the water

Product Specifications

• Brand: OneSea
• Age Suitability: 3-4 years
• Sun Protection: UPF 50+ (blocks 98% of UV rays)
• Buoyancy Standard: EN13138-1:2021 (European Water Safety Standard)
• Buoyancy Material: Removable layered EPE foam inserts
• Fabric Composition: 84% Polyester, 16% Elastane
• Care Instructions: Hand wash in warm water; remove buoyancy inserts before washing