This was a gift, but since it's a sole-less indoor slipper, I've only used it about twice for walking practice in the room. I think it's more suitable for protecting your feet from the cold when you're outside ( ˘ω˘ ) I'm not sure about the size, but it fits my 12cm son, so please use that as a guide. Due to shipping costs, I will flatten it for shipping. Although it's hardly been used, please consider that it is a used item and has been stored at home before purchasing.