These socks are produced on Italian-made 200N Lonati knitting machines. Lonati is widely considered the best sock knitting machine in the world. Their patented TrueStay™ silicone technology keep the socks up all day. TrueStay™ by DeadSoxy is an incredibly effective patented solution to keep dress socks in place. Sagging socks are a thing of the past. Made from 80% Long-Staple Cotton. 15% Polyester. 5% Spandex