This composite ball feels and plays like leather. Super tacky feel. Reinforced double ply Butyl Bladder for maximum air retention 100% Nylon wound for excellent shape retention and durability. Exclusive patented sponge rubber carcass layer for extreme softness and handling improvement. New Premium Grade Reinforced Composite material for Superior Durability. Scuff Resistant and NO Break-in Needed - Ready For Game Play! Unique Deep Pebble Channel design for best feel and grip. Official Men's size 29.5 inch circumference. Used by Top Colleges/Programs and Conferences throughout the Country! For Indoor Use Only.