Adidas messi 163 astro turf trainers childrens the adidas messi 163 astro turf trainers are designed to be worn on indoor pitches and artificial pitches the boots are crafted with a textured sole to ensure any youngster remains stable on their feet whilst the lace up fastening allows for a secure fit the boots also benefit from a padded ankle collar and cushioned insole for a comfortable fit under the foot trainers astro turf childrens lace up fastening padded ankle c