The Sensor Merino Extreme winter hat offers reliable protection against cold and wind. The high weight rib knit is made of 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 is also ensured by the 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 capacity.