Thank you for viewing. This item was purchased about 6 or 7 years ago (though I'm not entirely sure, I believe it was) from an apparel shop called index. It's a size M, which fits perfectly for feet that usually wear 23.5-24cm shoes (with standard width). If you have any questions or concerns, please feel free to comment and I will answer. Thank you very much! ( *´꒳`* )