21-23cm 8 pairs for sale 3 pairs new, black, ankle length 5 pairs used *There are 5 pairs of used socks (see photos below). My child's feet grew quickly, so they were only worn about 2-3 times each. They have been washed after use, so there is some pilling. Black length: about 10cm (photo 3) The two pairs on the left have a longer length (black and blue, photo 4) Length: about 14cm The used socks are not labeled with a size, but I measured the sole and it was 15cm. They were bought at the same time as the new ones above, and the new ones have the same size, so I think they are the same size or around 20cm. Please consider the used ones as a bonus. Thank you.