Signature Moisture Transport Wicks moisture, accelerates evaporation. Arch support aids in the increase of blood circulation and helps conform to the shape of the foot. Strategic Cushioning built into the sock for maximum shock absorption and protection. True Seamless Toe for ultimate comfort. Contoured "Y" Heel for comfort and perfect fit. ArmourBlock® technology neutralizes the microbes that cause odor before there is any odor at all, which results in moisture transport with maximum scent suppression. Modular Protection Zones in ankle area for added protection and space compensation. 50% Polyester/ 48% Nylon/ 3% Spandex.