Memoi Girls Modal Knee Sock, model MK-5057. This Memoi Modal knee sock is soft and stretchy. Very comfortable. We carry it in the color black. Generally a high school girl will wear a size 12 which fits about a 6 1/2 to 8 1/2 shoe or a 36 to 39 European shoe. If a person is about 5'7" and a size 9 1/2 shoe or bigger they could wear a size 14.