There has always been the misconception that the bigger the bat the better the hitter. For example, I use a big bat, I’m good or I use a light bat, I can’t hit because I’m too weak.  Not True!  A bat like a glove - is very personal. There are a lot of rules and regulations on bat sizes and restrictions as a player moves level to level and age to age.  Simply find the bat you can swing fast and comfortably.  If it feels good to the player- it’s fine.  Coaches, the eye test is needed! If the player is dragging the bat obviously have the discussion.