Castelli Rosso Corsa Pro 9 Sock Small/Medium WhiteThe Castelli Rosso Corsa Pro 9 Sock is a top level cycling specific sock. The padding is designed to give you compressive support at the mid foot and extra comfort at the ball of the feet. The 200-needle construction gives you extra stretch. There is a reflective tab at the center of the back for added visibility. The Meryl Skinlife yarns with odor-resistant silver ions help to reduce odor. Available in White, Black, and Savile Blue.8050949302644