DeMarini Vendetta C6 Fastpitch Softball Bat (-12) C6 Composite Barrel  DeMarinis proprietary C6 Composite barrel is designed with a wider composite weave that is tuned for singlewall barrels to provide maximum trampoline effect Half+Half Construction  This two-piece hitting system was introduced by DeMarini to create a large, more responsive sweet spot by silencing vibration, flexing before impact and re-coiling with a burst of ball launching energy Internal Rails Hybrid Handle-The vibration reduction of the Rails system turns the entire barrel into one big sweet spot. Its constructed with two distinct materials Great for high school and travel ball A softer outer material that cushions impact along with strategically inserted support rails that add stiffness to maintain a consistent and optimal swing.