That keep warm in winter and cool in summer, the ULLÅNGER 3/4 underpants are made of soft, superfine 100% merino wool jersey material with excellent thermoregulatory and antibacterial properties. They are ideal for skiing, winter sports, hiking. Grippy, flexible, single-layer jersey material made of 100% merino wool Flat seams to prevent friction Double cuff at bottom leg Soft and pleasant to the touch