Little League® International has assembled an online resource page dedicated to baseball bat information, that includes the latest bat information, current Little League Baseball® rules and regulations governing bats, and a series of frequently asked questions.
As of January 1, 2018, the new USA Baseball Bat Standard was implemented. Little League-approved baseball bats that were approved for use for the 2017 season will no longer be acceptable for use in any Little League game or activity as of January 1, 2018. For more information on the USABat standard and a complete list of bats approved through the USABat Standard, visit USA Bat for a list of approved bats. https://usabat.com/
Important Note: These changes only affect baseball divisions and don’t affect any divisions of softball.