These socks were provided by my child's soccer club and don't have a size listed, but I believe they are around 18-22cm. They are a size suitable for elementary school students. They are new and stacked together, so it's a little difficult to see, but of course, there are two socks (a pair). These are black socks with excellent stretch, perfect for soccer and futsal. - Color: Black - Design: Ribbed upper - Material: Stretchy fabric - Use: For soccer/futsal Thank you for looking.