Memoi Spot On Basics Girls Knee Sock is model SP-1019 and used to be called Round the Clock Girls Knee Sock, Model number C1019-KH. The Memoi Spot on Basics replaced the Round the Clock product. These Memoi knee highs are very affordably priced. They run a bit long on the leg length. For example, the size 7-8 sock will probably be a bit long on the leg of an average 6 yr. old girl, she might need to roll it over at the top. This length is great though for leg coverage. The size of the sock is woven into the inside of the top band of the sock.