Baselayer Top
Question about clothing thermal underwear?
Are there clothing thermal underwear out there that I can wear at 20 degrees Fahrenheit or less weather and still be well I want to wear underwear JUST and no other clothing on top of it. Is it exists today? If yes, what is your experience with it?
base layers are designed to reflect heat towards the body, while moving moisture from the skin. Most of these fabrics do not offer resistance to wind or water repellent, so it would not work as an "only" time layer cold. The closest thing I can think of would be a combination of downhill speed, which is a bonded multilayer material made of polyester / olefin / polyurethane mixture bonded to a breathable membrane. There are also other fabrics used in soft shells (Schoeller Dri-skin, Coolmax, etc.) that offer a combination of reflectivity, wind resistance and water resistance, but usually they do not have enough stretch to fit perfectly, and are larger than a base layer. The amount of heat retained by any tissue is directly porportional your activity level, Thus, for example, a dress down to keep you warm while being active would not offer the same level of heat if you were sitting in the stands.
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