These wool socks are made with a knitting machine. Sheep wool and acrylic were used to make socks. These knitted socks are super thick and warm. Natural sheep wool creates dry heat, actively absorbs moisture and allows the skin to "breathe", while acrylic makes the socks more durable. Socks can be worn at home instead of slippers or together with slippers, as well as used during sleep, as they are quite soft and comfortable.