Soft, Smart and Slightly Neurotic

For those who lie awake at 3am contemplating whether penguins have knees or if they just bend awkwardly, this T shirt rather sums up your vibe. Made from fabulously soft organic cotton, it's your sartorial soulmate—comfy, eco-aware and just the right amount of witty.

Why Choose Our Professional Overthinker T Shirt?

Utterly Soft: Delight your skin with beautifully crafted organic cotton designed for all day marvellous comfort.

Sustainably Minded: Responsibly made so you can feel warm and fuzzy inside and out, even when you’re spiralling about that thing you said three years ago.

Properly Thoughtful Design: Our oversized fit and playfully printed motto make it the perfect conversation starter—or ender, if talking isn’t your thing.

Mysterious Message: Each one hides a little secret inside. Curious? You should be.

Product Details:

Material: 100 percent organic cotton

Fit: Oversized for casual brilliance

Care: Machine washable because none of us need more stress

Made for: Thinkers, feelers and anyone who loses sleep over email punctuation

Printed quote: Professional Overthinker

Slip into something marvellously introspective and order yours while they're still delightfully available.

color black White

size L M S XL XS

rolled up sleeves No Yes

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!

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.

Read All About Us >

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.

Sostter partners with independent brands that intrigue, inspire, and bring something genuinely different to the world of fashion, design, and living. Join us!