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A Rather Marvellous Long Sleeve Top for Children Who Actually Move
Look, we've made a long sleeve top that's bright, bold, and refreshingly unisex. It's the sort of thing a child can wear without looking like they've been dressed by a committee of well-meaning relatives. Soft organic cotton with just a whisper of elastane means your little one can run, jump, cartwheel, and generally behave like an actual child rather than a show pony.
Why Choose Our Organic Long Sleeve Top
Kind to Delicate Skin: 95 percent organic cotton means no nasty chemicals lurking about. Rather good news if your child's skin is on the sensitive side.
Built for Movement: That touch of elastane gives proper flexibility. It stretches where it needs to, stays put where it should, and doesn't restrict the sort of energetic nonsense children get up to.
Utterly Versatile: Layer it under a sleeveless dress when the weather turns chilly. Pair it with our matching leggings for a splendid block colour look. Or simply let it be the glorious foundation of whatever your child decides to wear.
Honestly Made: We've designed this range so children can dress like children and play like children. Unrestrictive, flexible, and genuinely designed for fun rather than faffing about.
Product Details
Composition: 95 percent organic cotton, 5 percent elastane
Care Instructions: Wash on a gentle cycle. Dry flat. Do not tumble dry.
This is the sort of top that earns its place in the weekly wash rotation rather quickly. Rather fetching, too.
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!