CelsiusUnderwear™ – Heated Functional Underwear Unisex

Never freeze again — with just one push of a button! 

With the CelsiusUnderwear™, even the coldest days are no longer a problem — simply warm up instantly at the push of a button.   

   Please note: The sizing runs one size smaller than usual, so it is recommended to choose the CelsiusUnderwear™ one size larger than your normal size!

Guaranteed warmth – thanks to Heat2B technology 

The CelsiusUnderwear™ features multiple adjustable temperature settings and keeps you warm outdoors in any weather. Thanks to the innovative Heat2B technology, you’ll stay comfortably warm at all times and never have to worry about freezing temperatures.  

Individually adjustable temperature – 8 hours of warmth guaranteed 

The CelsiusUnderwear™ can be heated to 25°C, 35°C, and 45°C. You can easily power it with a power bank and a USB cable, and it will keep you cozy and warm for hours.

The CelsiusUnderwear™ is made of washable material and is machine washable — simply remove the power bank before washing.   

Perfect for on the go – The only sweater with a heating function