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Recovery That Actually Works (We Were Rather Sceptical Too)
Look, we'll be honest. When we first heard about infrared-infused fabric promising to speed up recovery, reduce muscle soreness, and boost circulation, we raised an eyebrow. But then the science rather got in the way of our scepticism. This splendid long sleeve top genuinely does what it claims, and you'll feel the difference from your first wear.
Why Choose Our Infrared Performance Top
Scientifically Superior Recovery: The infrared technology woven into every fibre promotes blood circulation, increases tissue oxygenation by up to 20 percent, and accelerates cellular metabolism. Translation: your muscles repair faster, lactic acid clears more efficiently, and that post-workout soreness becomes far more manageable.
Built to Last Through Everything: Triple stitched hems, extra durable fabric, and reinforced stitching mean this top will survive countless washes and the general chaos of an active life. It's rather the workhorse of your kit bag.
Comfort When You Need It Most: Raglan seams and flatlock stitching eliminate chafing and irritation. The breathable, quick drying fabric means you can slip it on immediately after training to cool down while you catch your breath.
Injury Prevention Built In: Wear this for 30 minutes before exercise to prime your muscles and reduce soft tissue injury risk by an average of 80 percent. It's like having a physiotherapist knitted into your clothing.
Temperature Regulation That Adapts: The fabric stores thermal energy 63 percent longer than standard materials and dries 65 percent faster. Warm when you need warmth, cool when you're overheating. Rather marvellous, really.
Product Details
Key Features: Supportive fit across the shoulders, extra durable construction, breathable and quick drying fabric, triple stitched hems for longevity
Infrared Benefits: Increased local blood circulation, enhanced tissue oxygenation, accelerated cellular metabolism, natural temporary pain relief averaging 25 percent reduction, accelerated recovery from exertion and injury, reduced inflammation, SPF35 plus rating, antimicrobial properties
Sizing: Fits true to size. The infrared technology works whether worn snug or loose, so choose based on your personal preference. Model shown is 5 feet 3 inches wearing size small. Available in sizes XS through XL (UK sizes 8 through 16).
Fabric Composition: 50 percent KYnergy polyester, 32 percent polyester, 18 percent elastane
Care Instructions: Wash at 30 degrees Celsius. Do not tumble dry.
Certified Performance: FDA certified as a Class I medical device. The infrared benefits are permanent and built into the fabric itself, never diminishing with use or washing.
Optimal Use Cycle: Wear 30 minutes before training to prepare, during your workout, and for at least an hour afterwards to support recovery. Use continuously if rehabilitating an injury for maximum benefit.
Join the community of athletes and active people who've discovered that genuine recovery science beats wishful thinking every time. This top isn't just another piece of kit. It's rather good.
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!