DeMarini Official Youth Baseball Bat with Shock Diffusion Handle: RUMBLE RML11, 2-1/4" Diameter, Performance Alloy, 1.15 BPF, Weight to Length Ratio: -10, Length/Weigth: 29"/19 oz. (Approved for Play in Little League, Babe Ruth Baseball, Dixie Youth Baseball, and Pony Baseball AABC) -10 Length to Weight Ratio 2-1/4 Inch Barrel Diameter Shock Diffusion Handle reduces the shock felt at impact! Approved by Little League, Babe Ruth Baseball, Dixie Youth Baseball, Pony Baseball AABC and other associations Length/Weigth: 29"/19 oz.