SockGuy&';s SGX(TM) socks are designed with the elite athlete in mind and features our exclusive Elite Performance Formula, a blend of PolyPro, nylon and spandex. The new SGX(TM) sock line provides a compression fit, performance ribbing, enhanced ventilation and awesome breathability. These socks feel great, look great, and with SockGuy&';s signature Stretch-to-Fit sizing and reinforced toe & heel, SGX(TM) socks perform like no other. Guaranteed to be the most comfortable performance socks you&';ll ever wear. Our SGX socks feature: a Compression ribbing cuff helps prevent fatigue by increasing blood flow a Mesh upper for maximum airflow ventilation a Snug arch support hugs foot for maximum comfort and virtually zero-slip a Streamlined friction-free sole: go longer and play harder with no pain a Seamless Toe