Mizuno Frenzy Super Lite -12 Fastpitch Softball Bat - Womens - Girls Mizuno's Techfire Technology for increased sweet spot utilizing three different levels of materials Black Onyx Carbon for improved durability and feel Cylinder seaming technique eliminates inconsistencies Anti-Shock Construction for less vibration and improved feel Meets all current Bat Performance Standards - ASA, USSSA, NSA, ISA, and ISF