2016 Miken Ultra II Black Big Cat Endload 2-Piece Triple Matrix Core technology increases our exclusive aerospace grade material volume by 5%, eliminating wall seams with a breakthrough carbonized process that maximizes both performance and durability Flex 2 power (F2P) optimizes handle flex to barrel loading which maximizes the overall speed of the bat head through the hitting zone 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 the USA