Combat B2 -12-Ounce Youth Reloaded Baseball Bat PMT (Precision Molded Technology) allows Combat engineers to design barrel wall thickness to maximize barrel trampoline effect and bat performance BFT (Blended Fiber Technology) is used to create more trampoline effect without sacrificing durability ACT (Anisotropic Composite Technology) varies stiffness along the handle reducing sting and across the barrel for softer feel and improved bat performance VST (Variable Stiffness Technology) allows Combat to design lower barrel wall stiffness, resulting in a larger sweet spot SBT ( Separation Barrier Technology) allows brand new bats to exhibit maximum performance and feel, right of the rack with no break-in period necessary-Hot Out of the Wrapper