The Rock Women's 28.5" Ak-4500 Composite Leather Basketball - Used by Top Colleges - Superior Air Retention and Durability - Patented Deep Pebble Design - w/ Certificate of Authenticity OFFICIAL "THE ROCK" BASKETBALL - Used by Top Colleges/Programs and Conferences throughout the Country! SUPERIOR AIR RETENTION AND DURABILITY - Reinforced double ply Butyl Bladder for maximum air retention 100% Nylon wound for excellent shape retention and durability. Scuff Resistant and NO Break-in Needed. EXCLUSIVE PATENTED UNIQE DEEP PEBBLE CHANNEL DESIGN - Exclusive patented sponge rubber carcass layer for extreme softness and handling improvement. COMES WITH CERTIFICATE OF AUTHENTICITY 28.5" SIZE