Thank you for viewing. These are a new, unused two-pair set of GU socks, size 16-18 cm. They are black and a vibrant, fluorescent-like yellow-green. I cut the tags off, intending to have my child wear them, but they said they didn't want to, so I've kept them stored away. Since the tags are gone, I've listed them as "like new," but they haven't actually been worn. If you don't mind this, please consider purchasing them.