21cm I am selling these because my child has outgrown them. They are new and unused. The following is an excerpt from the official website: adidas X Speedportal.4 VEL TF J Push your limits with these junior lightweight soccer boots. The comfortable synthetic upper provides a soft touch for fast dribbling, and the adjustable strap provides a secure hold. The sole is combined with a rugged rubber outsole, contributing to play that is one step ahead on artificial turf. This product uses a series of recycled materials as one of adidas' solutions to eliminate plastic waste, and the upper uses at least 50% recycled content. ■ Upper: Synthetic leather ■ Outsole: Rubber sole ■ Color: Team Shock Pink