FITS' most popular hiking sock style, the Light Hiker, is cushioned under foot to take the pounding of an all-day hike while managing all the moisture you can throw at it. FITS patented Full Contact Fit hugs the contours of your foot and stays put so there are no loose socks to rub you the wrong way. Crew height rises just below the calf. Extra cushioning in the heel, toe and the arch. Merino Wool 65% Nylon 27% Polyester 6% Lycra 2%