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The Sleep Solution That Actually Works (We Were Surprised Too)
Right, so here's the thing about those dreadful 3 a.m. diaper changes. They're rather unavoidable, but they don't have to be a complete catastrophe. Our Bamboo Sleep Sack is a lightweight, sleeveless wearable blanket designed with one glorious purpose in mind: keeping your little one snug and secure while you tackle middle-of-the-night necessities without waking the entire household. The downward zipper means no faffing about. Just zip, change, and return to something resembling sleep.
Why Choose Our Bamboo Sleep Sack
Thoughtfully Designed Zipper: Opens from the bottom for hassle-free diaper changes without disturbing your baby's slumber or your rapidly diminishing sanity.
Bamboo Fabric Benefits: Naturally breathable, temperature-regulating, and rather gentle on delicate skin. No overheating, no uncomfortable wake-ups from being too cold.
Sleeveless Design: Reduces the risk of your baby getting tangled or overheated while maintaining that blissfully cosy feeling they need for proper sleep.
Safe and Certified: Engineered with sleep safety in mind so you can actually rest easy knowing your baby is secure and comfortable.
Product Details
Size Small: Fits babies from 0 to 6 months, 23 to 28 inches tall, weighing 10 to 18 pounds.
Size Medium: Fits babies from 6 to 12 months, 26 to 31 inches tall, weighing 15 to 24 pounds.
Size Large: Fits babies from 12 to 18 months, 30 to 34 inches tall, weighing 22 to 28 pounds.
Peaceful nights do exist. Order yours today and join the ranks of rather grateful parents who've discovered the rather marvellous difference a properly designed sleep sack makes.
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!