Combat Pure Gear Youth Baseball Bat -12 PMT (Percision Molded Technology) allows Combat engineers to design barrel wall thickness to maximize barrel trampoline effect & bat performance. BFT (Blended Fiber Technology) is used to create more trampoline effect without sacrificing durability. GT (Gear Technology) has a special taper in the barrel, which provides a softer feel and greater performance. MAP (Maximum Allowable Performance). Combat's single wall construction allows for longer barrel lengths and lighter bat weight. Approved for play in LLB, DIXIE, PONY, AABC, BABE RUTH, and USSSA.