Swix Aspire Wool Blend LS W

"This underwear is the ideal partner for various activities; such as running in fringe temperatures, hiking/trekking etc. All natural fibers; wool is insulating and temperature regulating, while Tencel provides ventilation, coolness, moisture absorption that helps remove sweat off your skin, and very soft touch. Because the lanolin from wool has better anti-microbe/anti-odor properties; the panel under sleeves are 100% soft merino. This jersey can be your ideal partner for many consecutive days of high speed exploring."