Sondico precision astro turf trainer juniors the sondico precision astro turf trainer juniors benefit from an all nappa leather upper with a compressed eva midsole for comfort and a hard wearing rubberised sole which is designed for us on astro turf surfaces the poron foam insole is designed to cushion the foot this junior football trainer has a padded and shaped ankle for comfort with the heel grip to reduce slipping the lace up front provides the shoe with a secure and comfortable fit