There is varies types of thermal clothing weight category* Ultra lightweight* Lightweight * Heavyweight* types of Fabric materials Silk* Cotton* Wool* Synthetic etc.
Wool - Wikipedia
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Mens Thermal Underwear Set For Men Women Winter Outdoor Sports Clothing Quick Drying Charcoal Fibre Plus Size SXXL 231212 From 37,77 €
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High temperature insulating textiles manufactured by Apronor
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