I'm not sure about the sock size, but I believe they were sold in the baby section at UNIQLO. *Please refer to the photos comparing them to a ruler!* The Daisy socks are still usable, but they have a lot of pilling and some fraying, so please consider them as a bonus. (Let me know if you don't want them.) The leg warmers were also around knee-length, I think, but the purple ones have some pilling, so please be aware of that. The UNIQLO socks are in good condition, but the others show signs of wear, so I've marked them as "slightly damaged or dirty"! Thank you!