CUSHIONING WHERE YOU NEED IT WITHOUT THE BULK - THE SMARTWOOL PHD SKI LIGHT PATTERN SOCK.Give your feet the comfort they deserve without the bulk with the Smartwool PhD Ski Light Pattern Sock. Made with the 4 Degree Elite fit system that offers greater stretch and a secure fit, the Light Pattern Sock won't move around in your boot even when your taking on black diamonds. FEATURES59% merino wool, 39% nylon, 2% elastaneOver calfAll-mountain skiing, all-mountain snowboardingReliawool padding on shin and footMesh ventilation strategically placed throughout sock4 Degree Elite fit system