I've worn these for about half a year. They are 15.5 cm. Since there's a name written on them, you could cover it with a name sticker, and they should still be usable. Please be aware that there is a feeling of use and some minor stains. They have been home cleaned. Please understand that these are used items before purchasing. Regarding the condition of the items, there is a possibility of overlooking minor issues. Please refrain from purchasing if you are overly critical. If you have any concerns or questions, please feel free to ask. #IFME Slippers 15.5