Collection: Heated Underwear

Firoth's base layer clothing uses built-in carbon fibre or graphene heating elements to generate warmth directly against the skin. Our battery heated thermal underwear for women and men is warmed up by a USB-rechargeable power bank. With heated underwear, you stay comfortably warm both indoors and outdoors. Whether you're heading out for a morning run, hitting the ski slopes, or simply trying to stay warm on a cold commute. This collection brings together heated thermal sets, heated long johns, heated undershirts, underpants and overalls.