They are 17cm, but they run small! My child usually wears 17cm, but these didn't fit. I think they're suitable for children who usually wear 15-16cm. Spiderman-style blue and red sneakers with LED lights. - Color: Blue and red sneakers - Features: With LED lights - Design: Spiderman style - Straps: Velcro straps - Material: Mesh and synthetic materials Thank you for looking.