Thermolite is a polyester yarn from Advansa. It features:

  • extreme lightness,
  • warmth and comfort,
  • fast evaporation.

It's very hard to product a fabric which keeps you warm and is very light at the same time. Thanks to Thermolite yarns it's no longer a problem. Engineers from Advansa found their models in nature. They discovered that polar bears have furcontaining thousands of tiny air pockets for greater insulation. After the discovery they built a yarn with hollow cores that provide the most warmth at the lightest weight. The larger surface area allows for faster evaporation by speeding moisture away from the skin to the surface of the fabric where it can evaporate more quickly. Hollow cores keep the fabric's warmth even in wet condition.