
Tan-Through Long Sleeve Shirt – Terracotta Mandala
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Experience Effortless Tanning with the Smarttan Long-Sleeved Tan-Through Blouse
Introducing the Smarttan Long-Sleeved Tan-Through Blouse, crafted from an ultra-thin stretchy material that cleverly replaces sunscreen. Enjoy a comfortable tan while strolling through the city, engaging in sports, or lounging on the beach, all with this innovative blouse. It's also perfect for swimming, as it dries in mere minutes after getting wet. Pair it with matching patterned mini leggings to complete a stylish sporty ensemble.
Why Choose the Smarttan Blouse:
- Tan-Through Fabric: Made from a special, ultra-thin fabric with tiny holes, allowing up to 70% of UV rays to pass through, enabling a balanced, sun-kissed glow.
- Exceptional Comfort: Composed of 80% polyamide and 20% elastane, this blouse offers remarkable stretchiness and quick-drying capabilities.
- Innovative Design: Features a skin-colored lining at the chest for modesty, eliminating the need for a bra while concealing nipples.
- Airy and Breathable: The thin, perforated fabric facilitates the seamless passage of air and sunlight, making it comfortable even on the hottest days.
Important Considerations:
- Safe Tanning: Provides adequate protection to prevent burns; however, those with sensitive skin should test gradually.
- Convenience Redefined: Never worry about reapplying sunscreen or having it wash off; this "fabric cream" stays put.
Enhance your tanning experience with the Smarttan blouse; it's designed for a healthy tan without sunburn, similar to sun protection creams. Remember, no tan-through fabric blocks 100% of UV rays, so combine it with sun protection oils for an even tan.
Embrace the ultimate blend of innovation and style with the Smarttan Long-Sleeved Blouse. Order today and enjoy a seamless tanning experience!
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!