Your new favorite running sock - no question. The updated Women's CEP Compression Tall Socks 4.0 is back better than ever with a complete overhaul designed to serve the specific needs of your feet. Experience a fresh cooling effect thanks to new innovative air channels in the foot, mesh structures throughout the calf and toe ventilation. Bye-bye blisters, hello cushy bliss. Ideal compression and strategically placed padding offers an extreme comfort that will last all day long.