Miken's proprietary HPI Injects Ultra tough epoxy into the highest grade carbon fibers at 750 pounds per square Inch. Extreme pressure and premium materials produce game changing performance and durability. 100 Comp is the revolutionary formula that changed the game and introduced certified Miken High performance equipment. It is engineered utilizing 100% Premium Aerospace Grade Fiber for legendary performance and durability. Made in USA. This hot out of the wrapper 1 pc bat is perfect for the hitter wanting a bat with a balanced feel for faster swing speed, large sweetspot, maximum durability, and unrivaled performance. Certified 100 COMP Exclusive 750X HPI for Serious Durability. One-Piece Premium Aerospace Grade Carbon Fiber Design. Balanced Swing Weight. 14.5 Inch Barrel Length. 2 14 Inch Barrel Diameter.Approved for play in USSSA, NSA and ISA. Made in the U.S.A.