SockGuy's SGX™ socks are designed for elite athletes and feature our exclusive Elite Performance formula, a blend of PolyPro, nylon and spandex. The new line of SGX™ socks offers a compression fit, performance ribbing, improved ventilation and impressive breathability. These socks feel great, look great, and with SockGuy's signature Stretch-to-Fit waistband and reinforced toes and heels, SGX™ socks perform like no other.