An incredibly hot one-piece bat, Mizuno HOT METAL combines our powerful HotMetal™ single-wall aluminum alloy with innovative CorTech™ technology, which adjusts wall thickness across the barrel to create a high-performance bat with an aggressive sweet spot. CORTECH™: Generates a wider sweet spot and reduced MOI for more power, forgiveness, and a faster swing speed for better performance at the plate. Hot Metal™ Alloy: A stronger alloy that allows for thinner walls, which leads to more pop and distance, without sacrificing durability. One-Piece Construction: For maximum mobility and comfort. Optimized End Cap: Great sound on batted balls, while also positively affecting the bat's sweet spot to give you more pop. Speed-Helix Grip: Designed to provide comfort and durability. One Year Warranty: Warranted from defects in materials and workmanship for a period of one year from the date of purchase. USSSA Approved: Approved for USSSA play.