Socks, Black These socks can be used for formal occasions such as kindergarten events, Shichi-Go-San, and ceremonies. I wore them for a few hours about 5 times. There is some pilling, but there are no noticeable scratches or stains, so I think they can still be used. I apologize that I cannot tell you the exact size because there is no size tag... They measure 15cm with a measuring tape, so considering the stretch, I think they are around 15-16.5cm? 17cm? Please check the photos and purchase accordingly.