Functional underwear or thermal underwear is the basis of your clothing choice. Your first layer of clothing should at least keep you dry. But when do...
Functional underwear or thermal underwear is the basis of your clothing choice. Your first layer of clothing should at least keep you dry. But when do you opt for extra wicking of perspiration and when for insulation? The material merino wool, synthetic fibres or a mix of merino with polyester or nylon largely shapes your choice.