HEATTECH is a revolutionary form of innerwear. The secret behind the warmth of HEATTECH actually isn’t a secret at all, but a case of science and immense amount of research. HEATTECH’s most vital quality is that it uses moisture released by the body to re-emit heat.
It does more than just keep you warm and comfortable.
Rayon fibers absorb moisture from your body and convert it into heat, creating a self-heating loop between your body and the fabric.
Ultra-fine microfibers—10 times finer than human hair — keep warm air in, providing continuous insulation.
Our innovative HEATTECH fibers are blended with fibers that release excess heat and moisture, which help to keep you feeling dry.