Frozen toes and feet can make for a miserable ride. This sock features cutting-edge fabrics and design to protect your feet from extremely cold temperatures. The Essential Thermo+ Sock is made with a double-knit layer in key areas of the foot for added warmth. It also features copper fibers woven in from heel to toe, which helps with blood circulation and prevents your feet from freezing. And the antimicrobial material helps prevent odors and bacteria from forming.