This oversized 33" ball is larger and heavier (3 lb) than an official ball. The larger size extends the shooting range and increases the challenge to bank shots during practice. The heavier weight also improves wrist strength and shooting power. Once students and players become successful shooting this larger ball, it will be even easier to accurately shoot an official-sized ball. It is made with a ZK composite leather cover providing excellent grip and control. Cover is also very durable and stands up to routine use. Designed for indoor use only.