S bottom length 9CM is suitable for foot length of 9-11 cm M bottom length 11CM is suitable for 11-13 cm foot length L bottom length 13CM is suitable for 14-16 cm foot length XL bottom length 15CM is suitable for 16-18 cm foot length XXL bottom length 17CM is suitable for 18-22 cm foot length Baby lace socks breathable and lightweight the socks will look great with a pair of Mary Jane shoes and a dress; perfect for many flower dresses concerts and other special occasions gift set Nice color 5 pairs of lace socks. These elegant lace socks will be a good gift for your family friends High quality cotton ankle socks hint of elastane provides the perfect amount of stretch for a better fit Note: Please allow slight tolerance in size due to manual measurement and lighting in photography may result in difference in color than it is in real life.