Please review the new bat requirements for baseball for the 2018 season. All baseball players from T-Ball - Majors will be required to use an approved bat. Below is from the Little League International Website which includes additional information as well as the full list of approved bats.
Please note that as of January 1, 2018, the new USA Baseball Bat Standard will be implemented. Little League-approved baseball bats that are approved for use for the 2017 season will no longer be acceptable for use in any Little League game or activity starting on January 1, 2018. For more information on the USABat standard and a complete list of bats approved through the USABat Standard, visit usabat.com.