The size is M. I usually wear around 23cm, so I registered it as such. There are scuff marks on the inside of both shoes. Please check the photos. Please read the profile. These are black heel boots made of ultra-stretch material, suitable for a wide range of occasions from casual to formal. - Model: Ultra Stretch Heel Boots - Color: Black - Heel Height: Mid Heel - Style: Casual - Style: Formal Thank you for looking.