Sigvaris Thermoregulating Wool socks are made with Australian Merino wool to provide a soft, comfortable feel while remaining itch-free. Merino wool is naturally durable, anti-microbial, odor-resistant, and has thermo-regulating properties that keep your feet comfortable all year around. Merino wool absorbs 35% of its weight in water, keeping skin dry and maintaining warmth in all weather conditions. These socks feature padded cushioned soles to provide comfort and protection in any situation. Mesh flex-zones provide ventilation.