Designed for use by tradesmen and for long periods of wear underneath boots, these socks are extra long with padded foot beds and heals and built in arch support. Very thick and comfortable socks. Comes in a three pack. The 7-NORM variation is for a 7 to 11 shoe size, with the 10-SUP for an 11 to 14 size. Made from a Cotton, Polyester and Elastane blend.