Kids' Socks Organic Cotton Mix Plain 2-Pair Set Size: 15-20cm The black is not pure black, but a gray that leans towards black. Although new and unused, these have been stored at home, so please purchase only if you are not concerned about this. Please also read my profile. They will be folded small and sent via Yu-Packet Post Mini. If they don't fit, they will be sent via Rakuraku Mercari Bin (Nekopos). Thank you for your understanding. Thank you. Nursery School Kindergarten Elementary School Student Boys Girls Unisex Preparing for New Life Preparing for New School Term 16cm 17cm 18cm 19cm