Introducing the Mizuno CRBN PRO Fastpitch Softball Bat - a game-changer for players seeking peak performance. Detonator Cor™: Mizuno's patented design creates low barrel compression for great performance, while improving impact sound. Cylinder Seaming: Allows for consistent performance and durability across the barrel. Dual Frequency Damper™: Mizuno's patented construction combines two different materials for vibration reduction and less flex for higher performance. Double Wall: Gives you higher peak performance right out of the wrapper with a larger sweet spot for more power and forgiveness. 2 Piece Construction: Two piece construction to create maximum performance and enhanced feel. 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. USSSA Approved: Approved for USSSA play. NSA Approved: Approved for NSA play. ISA Approved: Approved for ISA play. WBSC/ISF Approved: Approved for WBSC or ISF play. Detonator Cor™: Mizuno's patented design creates low barrel compression for great performance, while improving impact sound. Dual Frequency Damper™: Mizuno's patented construction combines two different materials for vibration reduction and less flex for higher performance. Black Onyx Carbon™: Increased durability with a shorter break-in period.