Balls usually consist of several layers of various synthetic materials like surlyn or urethane blends. Weighs no more than 1.62 oz (45.93 grams), has a diameter not less than 1.68 in (42.67 mm), and performs within specified velocity, distance, and symmetry limits. Has numerous dimples (250 – 450) all over its body. Use clue if u cannot get it still.