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Sun Protection That Actually Works (And Looks Rather Splendid)
Right then, here's the thing about children's swimwear: it needs to do rather a lot. Protection from the sun, obviously. Durability through countless cannonballs and belly flops. And ideally, it should look fabulous enough that your little one actually wants to wear it without protest. This Rainbow Bloom Long Sleeve Swimsuit manages all three, which we consider something of a minor miracle.
Why Choose Our Rainbow Bloom Long Sleeve Swimsuit
- UPF 50 Plus Sun Protection: Full coverage on the arms means you can breathe easier while they splash about. The fabric blocks 98 percent of harmful UV rays, which is rather important when you're dealing with delicate skin.
- Eco Friendly Materials: Made from 82 percent recycled ocean bound polyester and 18 percent elastane. We're essentially turning plastic that could've ended up in the sea into something genuinely useful. Marvellous, that.
- Safe for Sensitive Skin: OEKO-TEX certified, which means it's been tested to ensure there are no nasty chemicals lurking about. Your child's comfort matters, and we take that rather seriously.
- Utterly Fetching Design: The light blue base paired with vibrant multi coloured flowers is the sort of thing kids actually want to wear. It's rather good at standing out in the water too.
Product Details
- Available Sizes: 2 years through 8 years old
- Fabric Composition: 82 percent recycled polyester, 18 percent elastane
- Sun Protection Rating: UPF 50 plus
- Certification: OEKO-TEX certified for skin safety
- Also Available: Sleeveless strap version for warmer days
The little ones in your life deserve swimwear that's been properly thought through. Get your Rainbow Bloom Long Sleeve Swimsuit today and stop worrying quite so much about the sun.
SHIPPING + RETURNS
THE RATHER IMPORTANT BITS
This rather lovely piece ships directly from our brand partner - we work with independent brands who are absolutely brilliant and work frightfully hard to create beautiful things.
SHIPPING DESTINATIONS
Now, here's the thing - our wonderful brand partners ship to lots of different places, but not all of them can ship worldwide.
Some are brilliant at international shipping, others prefer to keep things closer to home.
At checkout, you'll see exactly where this particular brand can send your goodies.
We're terribly sorry, but shipping costs do vary rather wildly depending on where you are in the world. The exact figures pop up at checkout - no nasty surprises!
RETURNS
You have 14 days to return items.
Now, we absolutely adore our brand partners - they work incredibly hard and we do try to support them as much as we possibly can. So I'm rather afraid we have to pass the return postage costs back to you. Frightfully sorry about that!
🌍 PLEASE CHOOSE THOUGHTFULLY:
Our wonderful partners put their hearts into everything they make.
Ordering multiple sizes to try at home is rather hard on our planet and makes things jolly difficult for these brilliant independent creators.
When in doubt, do ask us first!
PAYMENT
We're frightfully modern and accept all the usual suspects:
Visa, Mastercard, American Express, PayPal, Apple Pay, Google Pay, and Shop Pay
SECURE AS HOUSES
Everything's properly encrypted and secure - your details are safer than the Crown Jewels!
All prices in lovely British pounds £ GBP, though international chaps will see converted prices.
Any payment pickle? We're here to help sort things out! Contact us
We Have Lots More Like This.........
Hello, we are Sostter....
Sostter began, as all good ideas do, with a lively conversation and a shared sense of frustration. Why had the world of independent design become so serious, so samey, so… beige? Where was the spark, the imagination, the sheer joy of discovering something that made you stop and stare?
We dreamt of a marketplace that celebrated difference — where curious minds could explore a world of independent brands, design-led makers, and thoughtful artisans. A space that felt exciting, human, and beautifully imperfect.
Today, Sostter brings together remarkable people and their creations — from London to Lausanne, Brooklyn to Berlin — uniting makers and discoverers through craftsmanship, creativity, and conscience. Every object tells a story, and every purchase supports an independent brand doing things differently.
This is just the beginning. But enough about us — step inside, explore our world, and see what catches your imagination.
Giving Back
We’re proud to support Sutton Night Watch, a grassroots UK charity making a real difference in the lives of those facing homelessness. Through regular donations of stock, supplies, and essentials, we back their mission to offer warmth, dignity, and practical help to anyone in need — right where it matters most.
Sell with us
Sostter partners with independent brands that intrigue, inspire, and bring something genuinely different to the world of fashion, design, and living.Join us!