Garments worn closest to the skin, designed to manage moisture and provide insulation in low temperatures, are crucial for maintaining comfort and preventing hypothermia. These foundational items of clothing trap air, creating a warm layer, and wick away perspiration to prevent chilling. An example includes a merino wool undershirt worn beneath outerwear during skiing.
The implementation of such specialized undergarments is vital for individuals engaging in outdoor activities during winter. Effective moisture management and thermal regulation enhance performance, reduce the risk of cold-related injuries, and improve overall comfort. Historically, natural fibers like wool were primary choices, but advancements in synthetic materials have expanded options and improved functionality.