If your the player height is 142 to 152 cm tall (about age 12 to 13), go with a 31 in bat. Baseball bat length is matched to the player height and weight. Too long and the swing slows; too short and you lose plate coverage. We list length by height.
| The player height | Recommended size |
|---|---|
| 90 to 100 cm tall (about age 5 to 7) | 26 in bat |
| 100 to 112 cm tall (about age 6 to 8) | 27 in bat |
| 112 to 122 cm tall (about age 8 to 9) | 28 in bat |
| 122 to 132 cm tall (about age 9 to 11) | 29 in bat |
| 132 to 142 cm tall (about age 11 to 12) | 30 in bat |
| 142 to 152 cm tall (about age 12 to 13) | 31 in bat |
| 152 to 165 cm tall (teen) | 32 in bat |
| 165 to 180 cm tall | 33 in bat |
| 180 cm and up | 34 in bat |
| Contact hitter | Slightly shorter and lighter for bat speed. |
| Power hitter | A touch longer and heavier for reach and mass. |
| League rules | Check the required drop weight and barrel standard for your league. |