A no-show sock that your shoe will not eat. High-impact cushioning only where you need it - in the toe cup and the heel lock areas. This sock delivers pavement-pounding performance in every stride. 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. This low cut sock will not fall down into your shoe. Toe and heel lock for high-impact cushioning. Narrow welt just above the shoe. Super-fine Merino Wool 66% Nylon 27% Polyester 5% Lycra 2%