Nike Dry Cushion No-Show Training Socks (3 Pair) Training socks deliver impact protection and total comfort. Designed with a mesh panel on top of the foot to increase breathability. Dri-FIT technology removes sweat from the skin to keep feet cool and dry. Anatomical left/right fit delivers a custom, secure fit. Y-stitch heel delivers a secure, snug fit that wont slide in your sneakers. Lycra arch offers a supportive fit to key areas of your feet. No show with tab reduces chafing and discomfort. Sock Size: Small= Shoe Size: Women's 4-6 Sock Size: Medium = Shoe Size: Women's 6-10 Sock Size: Large = Shoe Size: Women's 10-13