Analysis of information sources in references of the Wikipedia article "Thinsulate" in English language version.
In 1979, 3M introduced a new synthetic insulation material called Thinsulate, which derived its name from the ability to provide warmth while remaining relatively thin. Thinsulate fibers are just 15 micrometers in diameter, which is substantially smaller than polyester, the material that is traditionally used as an insulating agent in outdoor clothing. Over the years, Thinsulate has found its way into boots and jackets, but is especially popular in glove and hats. The synthetic fibers are regarded as a high-performance alternative to down, in part because they are water resistant while remaining breathable too. Later iterations of Thinsulate included a flame-resistant version, a more waterproof alternative, and one that more closely mimics the properties of down.
If Thinsulate Insulation gets wet, it will still keep you warm. That's because Thinsulate Insulation retains its insulating ability in damp conditions. It absorbs less than one percent by weight of water, so it stays effective at keeping you warm-and it dries easily if it does become wet.
