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The Sweatshirt That Actually Keeps You Warm (Imagine That)
Look, we're not going to pretend this is anything other than what it is: a rather splendid heavyweight sweatshirt built for when the weather turns properly miserable. Constructed from dense 400 GSM CVC fleece, the Heavy Sweat delivers genuine warmth with an oversized silhouette that somehow manages to look intentional rather than like you've borrowed your dad's jumper. Though you could do that too. We won't judge.
Why Choose Our Heavy Sweat
Structured Warmth Without the Bulk: The brushed inner lining traps heat whilst the cotton-rich blend keeps you from feeling like you're wrapped in a sleeping bag. Dropped shoulders mean you can actually move your arms, which is rather handy.
Built to Last: Ribbed cuffs, hem, and collar maintain their shape through repeated washing and wearing. This isn't a sweatshirt that gives up after a season. It's got proper staying power.
Beautifully Understated: Minimal branding keeps things clean and deliberate. No logo shouting. No excess noise. Just quality construction you can feel.
Versatile Beyond Reason: Wear it solo on those grey London mornings, layer it under a coat for genuine insulation, or throw it on during travel when you've given up on looking presentable. It works everywhere.
Product Details
Fabric: 80 percent cotton and 20 percent recycled polyester, woven at 400 GSM for density and durability
Fit: Oversized silhouette with dropped shoulders. True to size for a relaxed fit. Size down if you prefer something closer to your frame.
Features: Brushed inner for insulation and softness, ribbed cuffs and hem for structure, tonal woven branding
Care: Cold wash inside out. Line dry recommended to preserve the weight and structural integrity.
This is an elevated essential for anyone who refuses to compromise on warmth or construction. Rather good value, all things considered.
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!