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Mandy, Sarah, Maria, and 58,500+ others love Rosemary.

The ThermoForm Base Layer - Self-Heating Comfort, Invisible Under Clothes + 50% OFF

£26.50
£53.00 £26.50
Save£26.50 Sold out
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Betaal later met Klarna 58,500+ happy customers
Only 8 items left for this price

This Ultra-Thin Thermal Underwear is 65% Warmer Than Regular Undershirts and Regulates Heat to a Cozy 370 C

You’re facing freezing weather, but you hate wearing bulky layers that make your coats look puffy. You're constantly shivering because your current layers aren't warm enough, or the tight fabric restricts walking or moving.

But what if you could lock the heating and isolate cold air with one ultra-thin, invisible layer? This is not just underwear. The mechanism is a Seamless Elastic Thermal Inner Wear made with the latest heat-trapping nano-weave.

Self-heating underwear demo

This technology regulates body temperature to a cozy 370 C. It is 65 % warmer than regular underwear, ensuring you stay warm all day, without sacrificing the fashion you expect.

The material is Super Elastic and Ultra-thin, ensuring a comfortable fit for pressure-free movement.

Heat-regulating fabric

The Ultimate Heat-Trapping Solution for Winter Travel and Daily Wear

✔ ULTRA-THIN & INVISIBLE UNDER OUTFITS
Super thin (no lumps!) and designed to be worn under your favorite outfits. It keeps your silhouette neat—no bulky look.

✔ 370 C SELF-HEATING NANO-WEAVE
Made with the latest heat-trapping nano-weave, it regulates body temperature, keeping the body warm at 370 C even in the cold season.

Elastic fit demonstration

✔ SUPER ELASTIC - FREE SIZE FITS MOST
 Highly elastic fabric adapts to any body shape. Makes every movement unimpeded (Four-way stretch implied).

✔ TRAVEL-FRIENDLY & COMFORTABLE
Lightweight (only 0.22 kg per set), easy to wear and carry, making it your must-have winter travel companion.

FAQ

  • Will the fabric cause overheating?
    No, the fabric is Breathable, ensuring consistent comfort all day without overheating.
  • Is the set suitable for men and women?
    Yes, this set is available in versions For Women and For Men.

Specifications:

  • Product: Seamless Elastic Thermal Inner Wear

  • Material: Nano-weave fabric (Rayon Fiber implied)

  • Temperature: Regulates body temperature to 370 C
  • Package: 1 set (top + bottom)


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They loved their products—and we think you will too. See what some of our 58,500+ customers had to say.

Rosemary's customer service is fantastic! I had a question about sizing, and they responded so quickly and kindly. My order arrived on time, and everything fit perfectly. Such a great shopping experience!

Emily H. 1 day ago

Ordering from Rosemary was so easy! The website is user-friendly, the checkout was smooth, and my order arrived quickly. The quality exceeded my expectations—definitely shopping here again.

Mandy K. 6 hours ago

The variety at Rosemary is amazing — so many unique and stylish pieces to choose from. I found exactly what I was looking for, and it arrived quickly and in perfect condition. Already eyeing my next purchase!

Emma W. 1 day ago

What impressed me most about Rosemary was the quality of the materials — everything feels so well-made and durable. You can really tell they care about what they sell. The whole process was easy and pleasant!

Linda W. 1 day ago

Shopping at Rosemary was a breeze! The website made everything straightforward, the payment process was quick, and shipping was fast. The quality is amazing—I’m so happy with my purchase!

Amanda S. 3 days ago

I loved ordering from Rosemary! The whole process—from browsing to checkout—was seamless and stress-free. My order came quickly, and the quality blew me away. Highly recommend shopping here!

Madison O. 7 days ago

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