Sanrio Working Cars, Socks Railway Socks, Kids Kintetsu Limited Express Shimakaze Doctor Yellow, socks, kids' socks with a car and star design, Flat size approximately 12-13 cm. Comfortable cotton material. I'm selling these because my child has outgrown them. Please understand that these are used items. The size was purchased as 18-20 cm. The police car socks, which were worn often, seem to have a weakened heel area. The Shimakaze and Doctor Yellow socks were worn less frequently and are still in good condition. Thank you for looking.