Before making a purchase, please ensure the baseball bat meets LLB specifications so it may be used in league play ...
For your convenience, we've bolded the most significant portions of the regulations that pertain to purchasing bats for players 12 years old and younger. Also, please review LLB's position on why non-wood bats are as safe as wood bats for league play.
Regulation 1-10 of the 2007 Official Playing Rules:
1.10 - The bat must be a baseball bat which meets Little League specifications and standards as noted in this rule. It shall be a smooth, rounded stick and made of wood or of material and color tested and proved acceptable to Little League standards. It shall not be more than thirty-three (33) inches (34 inches for Junior; 36 inches for Big and Senior League) in length, nor more than two and one-quarter (2 ¼) inches for Little League, 2 ¾ inches for Junior, and 2 ¾ for wood-2 5/8 non wood for Senior and Big League in diameter, and if wood, not less than fifteen-sixteenth (15/16) inches in diameter (7/8 inch for bats less than 30") at its smallest part. Bats may be taped or fitted with a sleeve for a distance not exceeding sixteen (16) inches (18 inches for Junior/Senior/Big League Baseball) from the small end. Senior/Big League baseball a bat shall not weigh, numerically, more than three ounces less than the length (in inches) of the bat (e.g., a 33-inch-long bat cannot be less than 30 ounces).
NOTE 1: The traditional batting donut is not permissible.
NOTE 2: The bat may carry the mark "Little League Tee Ball."
NOTE 3: Beginning with the 2009 season, non wood bats used in divisions of Little League (league age 12 years old and younger) shall be printed with a BPF (bat performance factor) of 1.15 or less. Senior and Big League non wood bats shall meet the BESR (Bat Exit Speed Ratio) performance standard, and such bats shall be printed with a permanent certification mark.
NOTE 4: Non-wood bats may develop dents from time to time. Bats that cannot pass through the approved Little League bat ring for the appropriate division must be removed from play. The 2 ¼ inch bat ring must be used for bats in all softball divisions, and in the Tee Ball, Minor League and Little League Baseball divisions of baseball. The 2 ¾ inch bat ring must be used for bats in the Junior League. The 2 5/8 bat ring must be used for bats in the Senior League and Big League divisions