The Nike Spin 4.0 Youth Football has an engineered shape for tighter spirals along with a tacky textured surface for consistent control. In addition, it features ultra-durable rubber for play in any weather. Engineered shape for tighter spirals Ultra-durable rubber for play in any weather Tacky textured surface for consistent control Butyl bladder system for exceptional air retention 100% rubber Size 8: Youth (ages 12-14)