1.9.0 inches circumference 2.156g 3.Poly Urethane Weatherproof 4.HS-CODE:39264000 5.Good for batting&training Specifications:1) Size: 9.0 inches circumference 2) Weight: 156+-10g3) Color: white, optic yellow, yellow, green, red, blue 4) Standard yellow pitching machine balls 5) Official size and weight 6) Multiple uses: fly balls, grounders, batting practice 7) Easier on bats and hands 8) 15% ...