Very warm functional underwear made of exclusive Merino Extreme material is suitable not only for extreme conditions. This high weight rib knit is made from pure Merino wool. Merino wool as a 100% natural fibre stands out for its excellent thermal insulation properties and also for its high antibacterial ability. Maximum comfort during your activities is also ensured by high moisture wicking, in case the fibre is wet it remains dry to the touch, does not cool and at the same time does not lose any of its thermoregulatory ability. Tested by the holder of the Himalayan Crown Radek Jaroš!