Meets USABat standard Approved for play in Little League Baseball, AABC, AAU, Babe Ruth/Cal Ripken Baseball, Dixie Youth Baseball, and PONY baseball 2 5/8†barrel diameter 2pc Composite – NEW ADV MicroForm barrel features an advanced construction that maximizes barrel size while maintaining maximum performance and pop on contact Features VCX Vibration Control Connection – a patented design that allows for independent movement between the barrel and the handle; that controls vibration and provides unmatched feel on contact.