When looking for a baseball bat for a kid, things to consider include the length of the bat and width of the barrel. Almost all youth leagues use metal bats, but some teams train with wooden bats, which is another option when purchasing one for a young player.
Online and in-store charts can help when choosing the length of a bat for a young player based on his height and weight. But these charts only provide ranges, and the bat should suit the player's skills and strengths. A longer bat is heavier but allows the hitter to reach pitches in a larger area. The barrel of the bat is the hitting part. A wider barrel provides a greater contact area, but also makes the bat heavier and harder to swing.