Used indoors only by a child. I'm not sure of the size, but I remember buying an XS. Someone who usually wears 23.5cm shoes tried them on and they were a bit too snug. Since they were used indoors, they are in relatively good condition, but please consider purchasing if you understand that they are used items. They will be shipped via Yu-Packet Post. The instep area may be compressed, but it should return to its original shape when opened. Color: Navy系 (Navy-based) Stains, tears, odors, etc.: None