These sandals can be worn from spring to autumn and are easy for children to put on because they have Velcro. The size marking has disappeared, but it is about 13cm. They are amphibious and very easy to use, and I loved them so much that I wore this series every year! The logo is rubbed off, but the shoes are still in good condition and can still be used. Thank you for your understanding. Mesh material pink sandals, lightweight and highly breathable. - Color: Pink - Brand: New Balance - Sole Material: Rubber - Design: Mesh material Thank you for looking.