I roll the ball to him and he bops it back with either his head or his hoof. I was very excited to receive the the WV Stacy Westfall Activity Ball. When I opened it, I very surprised that the material seemed so thin but reasoned that maybe it was tougher than it looked or why else would it be sold for horses? It took almost 30' to pump it up to firmness with the enclosed hand pump. I brought it out to the arena and rolled it toward my gelding. He was so happy! He rolled it back to me. This went on for a few more times, until the last roll, when he pushed it with his forehead and kicked it (with his bare hoof) toward me and I heard a hissing sound as the ball deflated. The human activity balls used for exercise in gyms are tougher and last longer for horses.