Mizuno's new one-piece design is full of innovative bat technologies to maximize performance. Cylinder Seaming: Allows for consistent performance and durability across the barrel. 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. ASA Approved : Approved for ASA play. ISA Approved: Approved for ISA play. WBSC/ISF Approved: Approved for WBSC or ISF play. NSA Approved: Approved for NSA play. USSSA Approved: Approved for USSSA play. X-Zone Technology™: Creates a massive sweet spot by adjusting composite angles in 10 specific zones across the barrel. Anti-Shock Construction™: Reduces vibrations felt in the hands for a more comfortable swing. Double Wall: Gives you higher peak performance right out of the wrapper with a larger sweet spot for more power and forgiveness. Optimized End Cap: Great sound on batted balls, while also positively affecting the bat's sweet spot to give you more pop. One-Piece Construction: For maximum mobility and comfort. Black Onyx Carbon™: Increased durability with a shorter break-in period.