Engineered with aerospace-grade MZ1700 Alloy™, the Mizuno B20-PWR Alloy offers great performance and durability, while also providing a balanced swing weight for increased swing speed. A Multiband Barrel™ design incorporates multiple thickness levels along the barrel to create a wider speed spot for more forgiveness and explosive power. One-piece construction generates less flex and more energy transfer to the ball to boost performance. Made with our Cushioned bat grip for great feel. One-year warranty. USA Baseball approved.