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Feel Better, Recover Faster, Train Harder
Right, so here's the thing. We've all been there—finishing a workout feeling absolutely shattered, wondering if your muscles will ever forgive you. This short sleeve baselayer top is rather good at helping you bounce back. Using infrared technology woven directly into the fabric, it works quietly in the background to help your body recover properly, so you can get back to doing what you love without quite so much complaint from your legs.
Why Choose Our Infrared Performance Baselayer
Boosts Blood Circulation and Oxygen: The infrared technology increases local blood flow and tissue oxygenation by up to 20 percent, meaning your muscles get what they need when they need it most.
Eases Recovery and Soreness: By flushing lactic acid from your muscles more efficiently and supporting cellular repair, you'll notice a 25 percent average reduction in post-workout pain naturally.
Built to Last: Extra durable fabric, triple stitched hems, and reinforced seams mean this top won't surrender to your washing machine or your kit bag anytime soon. Properly handsome construction throughout.
Breathable and Quick Drying: The fabric dries 65 percent faster than standard materials and actually regulates temperature beautifully. Pop it on straight after training to cool down while you wait for the shower.
Comfortable Fit: Raglan seams and flatlock stitching mean zero irritation, whether you're wearing it during recovery or during the next bout of training.
Temperature Regulation: Stores thermal energy 63 percent longer than standard fabrics when worn as a base layer, keeping you perfectly warm without overheating.
Sun Protection: SPF35 rating built right in, because sometimes recovery happens outdoors.
Antimicrobial Properties: Stay fresher longer between washes.
Product Details
Sizing: Model is 183cm (6 feet tall) wearing a Large. Our garments don't need to be skin tight for the infrared technology to work, so size according to your preference. If you prefer a looser fit, size up.
Available Sizes: XS (34 to 38 inches chest), S (36 to 38 inches), M (38 to 40 inches), L (40 to 42 inches), XL (42 to 44 inches), XXL (46 to 48 inches).
Fabric Composition: 50 percent KYnergy Polyester, 32 percent Polyester, 18 percent Elastane.
Care Instructions: Wash at 30 degrees Celsius (86 degrees Fahrenheit). Do not tumble dry.
FDA Certified: Certified as a Class I medical device, so you can feel confident wearing it continually. The infrared effect won't diminish over time because the minerals are woven into the fibres themselves.
How to Get the Best Results
Wear it 30 minutes before training to prime your muscles and boost circulation. Wear it during your workout. Keep it on for at least an hour afterwards to support recovery. If rehabilitating an injury, wear as much as possible.
This is the sort of top that quietly does its job season after season, wash after wash. Rather splendid recovery wear for anyone serious about training smart.
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.
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