Thorogood Men's Heavy Duty SockThorogood Heavy Duty Crew Socks keeps you active throughout the day, reducing friction that leads to blisters. They're made in the USA. FEATURES: Style: 888 5002, 888 5003 Copper CuTEC helps reduce odor, improve hygiene and enhances the look and feel of the skin creating a healthier environment for the wearer. Seamless toe closure creates a flat connection in the toe of your footwear reducing bulk, and eliminating blister generating friction. 61%