adidas Unisex Finale 15 Capitano Solar Green/Solar Yellow/Granite Soccer Equipment 3 Part of the UEFA Champions League Collection 1:1 take down in color and panel design from the Official Match Ball Machine stitched construction and internal nylon wound carcass for maximum durability and long-lasting performance Butyl bladder for best air retention to keep the ball's shape and stay inflated longer, and Special TPU exterior material is designed to resist abrasion and last longer 2016 colors have revolutionary tonal printing on ball for extra pop and style Size 3 ball suggested for ages 8 and under; size 4 ball suggested for ages 8-12; size 5 ball (official size) suggested for ages 12+. Size 1 is a mini ball. Check with your local league for size requirements.