
Black Adult Cap with Groke Design
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A Delightfully Puzzling Touch for Your Head
Some days call for a splash of mystery and just a hint of theatrical brooding. Enter this rather marvellous black cap, quietly inspired by a character who may not be the warmest of souls but wears black incredibly well. It’s the subtle flourish your look didn’t know it needed—like a plot twist in a romantic comedy you didn’t see coming.
Why Choose Our Black Adult Cap?
Fabulously Made: Crafted from 100 percent cotton, it’s gentle on your hair and rather good at encouraging breezes to mind their manners.
Delightfully Stylish Fit: Features an adjustable strap that hugs without hassle—secure but never suffocating.
Utterly Fetching Colour: Not just black, it’s the beautifully brooding shade of midnight that mysteriously matches absolutely everything.
Product Details:
Material: 100 percent cotton
Fit: Adjustable strap suitable for head circumferences between 51 and 59 cm
Style Note: A nod to nostalgia with a wink at streetwear, and altogether quite the head-turner
Ready to embrace your more enigmatic side? Tuck this fabulously made cap into your basket before it quietly slips away.
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!
The brands we work with all have a chat option, and they love to chat!
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 are Sostter
We met as children. Grew up a few streets apart. Built dens, rode bikes, and eventually — built Sostter.
It started with a shared love of objects that meant something…things with a past, or at least a purpose.
Now, Sostter is our grown-up version of a treasure hunt: a space where design meets storytelling.
We curate independent brands, one-of-a-kind finds, and everyday essentials with character.
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!