Size M, approximately 23 cm. I'm selling these because my child outgrew them after wearing them once indoors. The strap is elastic, and there are no stains or tears. No box included. These ballet flats have straps and are made of cushioned synthetic leather. - Color: Black - Design: Ballet flats with straps - Material: Synthetic leather - Insole: Cushioned - Sole: Flexible rubber sole Thank you for looking.