Mizuno Nighthawk Fastpitch Bat (-9) NEW Patented 2-piece LINK Construction combines both a composite barrel and composite handle connected with a vibration eliminating elastomer, significantly reduces vibrations to the hands to give the ultimate feel of a great hit every time Stiffer carbon fiber handle decreases the amount of energy that is lost with impact to the ball to create higher ball speeds across the barrel NEW Double Wall Technology provides thinner walls with added durability; Allows for higher peak performance out of the wrapper and larger sweet spot Mizuno's Black Onyx Carbon utilized for increased durability and improved feel with maximum allowed performance Approved for play in all associations: ASA, USSSA, NSA, ISA & ISF