Sun-Through Swimwear for the Effortlessly Golden
For those who dream of a flawless, even tan without the undignified faff of repositioning every five minutes, Smarttan is here to help. Designed in Estonia by a family who knows firsthand the benefits of sun exposure, Smarttan’s innovative swimwear lets the sun do its work—safely and stylishly.
More Sun, Less Hassle
The idea behind Smarttan was born out of necessity. When one member of the family found that sunlight was the most natural relief for psoriasis, it became abundantly clear that ordinary swimwear was standing in the way. Finding high-quality sun-through swimwear was a near-impossible task—so they created it themselves.
Explore More Innovative Fashion at Sostter
Should your interest in thoughtfully designed apparel extend beyond the beach, take a moment to explore Smarttan’s full collection or browse Sostter’s selection of fabulous independent brands.
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Tan Through Long Sleeve Shirt in Terracotta Mandala
£73.00SMARTTANTan Through Long Sleeve Shirt in Terracotta Mandala
£73.00 -
Tan Through Long Sleeve Shirt in Blue Mandala
£73.00SMARTTANTan Through Long Sleeve Shirt in Blue Mandala
£73.00 -
Tan Through Long Sleeve Shirt in Green Mandala
£73.00SMARTTANTan Through Long Sleeve Shirt in Green Mandala
£73.00 -
Sheer Sun Tanning Long Sleeve Top Tropic Haze
£73.00SMARTTANSheer Sun Tanning Long Sleeve Top Tropic Haze
£73.00 -
Tan Through Long Sleeve Shirt Terracotta Mandala
£73.00SMARTTANTan Through Long Sleeve Shirt Terracotta Mandala
£73.00 -
Tan Through Long Sleeve Shirt Carola
£76.00SMARTTANTan Through Long Sleeve Shirt Carola
£76.00 -
Tan Through Long Sleeve Shirt for Sun Lovers
£76.00SMARTTANTan Through Long Sleeve Shirt for Sun Lovers
£76.00 -
Pink Tropics Tan Through Tunic
£86.00SMARTTANPink Tropics Tan Through Tunic
£86.00 -
Tan Through Long Sleeve Beach Tunic
£99.00SMARTTANTan Through Long Sleeve Beach Tunic
£99.00 -
Tan Through UV Tunic Kristel
£99.00SMARTTANTan Through UV Tunic Kristel
£99.00
Check out a few more of our wonderful independent brands...enjoy!
Crossbody, Clutch Bags + Purses
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About Sostter
A Curated Marketplace for Independent Brands
Sostter is a curated marketplace celebrating independent brands, design-led makers, and creative thinkers from around the world. We believe in design with purpose — where craftsmanship, creativity, and conscience meet.
Our team searches for exceptional pieces with a story to tell — fashion, homeware, jewellery, art, and beyond — all brought together in one considered space. Whether you’re discovering something new or supporting an ethical brand you love, every find here has been handpicked for its originality and integrity.
Explore our world of independent brands, crafted design, and conscious creativity — all in one place.