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Dive Into Summer with OneSea
& Our Full Range of Water Toys

Keep your kids cool, confident, and safe in the water this summer.

From OneSea’s clever 3-in-1 buoyancy swimwear to high-power water blasters and garden water slides, find everything you need for the ultimate summer of outdoor play.

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This Summer's Must-Have Buy

Help your little ones discover the joy of swimming with absolute confidence.

The OneSea buoyancy swimsuit looks and feels like a premium, normal OneSea swimsuit but features clever, built-in removable support.

It is the ultimate certified children’s buoyancy aid swimsuit to bring complete reassurance to pool days, beach trips, and backyard splashes.

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  • 3-in-1 Buoyancy Design – Removable foam aids let the swimsuit adapt as confidence grows.
  • Fun, Character-Led Styles – Choose from Shark or Mermaid designs kids love to wear.
  • Sizes for Every Age – Available from 12 months through to age 4.
  • UV-Protective Fabric – Quick-dry material designed for all-day pool and beach play.
  • Secure Front Zip – Easy for parents to fit, comfortable for kids to wear.
  • Comes With a Reusable Beach Bag – Practical, giftable, and ready to pack.
Onesea shark suit features infographic showing 16 removable buoyancy aids, UPF 50+ hood, zip front opening, and Intertek BS EN 13138-1:2021 certification

OneSea: Built for Confidence in the Water

At the heart of the OneSea range is a smart 3-in-1 design that grows with your child’s confidence. Each swimsuit features soft, removable foam buoyancy aids sewn into a hood-and-zip wetsuit-style outfit — so as your little one becomes a stronger swimmer, you can simply remove padding to match. No bulky armbands, no separate life vest — just one comfortable outfit that does it all.

Available in fun Shark and Mermaid designs, and sized from 12 months right up to age 4, OneSea makes it easy to find the right fit for babies, toddlers, and preschoolers alike.

More Ways to Make a Splash

Looking for more ways to make a splash? Toytastic is your home for the best outdoor water toys UK wide, perfect for keeping the whole family active and cool all summer long.

Epic Backyard Battles

Arm the kids with a stream machine water launcher for high-powered water fights. These pump-action blasters shoot up to 70 feet with no batteries required—available as single launchers (TL-600 and TL-750) or as a competitive 2-Player Water Tag Pack with water-activated target vests.

Calmer Pool Essentials

For relaxing days, discover our range of kids pool toys, including Mondo’s 50cm character inflatable swim rings (featuring Frozen, Spider-Man, and Disney Princess). For active swimmers, add our adjustable swim-thru pool rings to create an exciting underwater obstacle course.

Backyard Play Zones

Keep toddlers entertained for hours with Dolu’s premium freestanding slides, 3-in-1 sand and water activity tables, and splash-ready playsets.

Ready for Summer? Get the Whole Family Set Up

Don’t let the summer pass you by. Whether you’re kitting the little ones out with a OneSea buoyancy swimsuit for extra water confidence, arming up with a Stream Machine for the ultimate garden water fight, grabbing a Mondo swim ring for the pool, or filling the garden with slides and splash tables, Toytastic has everything you need for a season of outdoor fun.
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