adidas Performance Brazuca Glider Soccer Ball Machined-stitched construction ensures soft touch and high durability Butyl bladder for best air retention to stay inflated longer 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+. Check with your local league for size requirements Ball coordinates with adidas soccer footwear, apparel, and accessories