About the SIZE: Size Small---(Foot length:4.7-5.9IN/13-15CM) fits to 2-4 years girls; Size Medium---(Foot length:5.9-6.7IN/15-17CM) fits to 5-6 years girls; Size Large---(Foot length: 6.7-7.5IN/17-19CM) fits to 7-9 years girls. About this pretty lace socks 1)Made of high quality fabric,soft,breathable and comfortable for better fit; 2) Big shimmering organza ruffles,perfect to paired with a dress and shoes or with a casual outfit and sneakers 3)Cotton socks,fit for spring,autumn and winter; 4)Foldover design of the ruffleeasy to decide how high or low you want the ruffles to sit.