Leave it all out on the plate when you swing the Marucci CAT9 Composite Pastime BBCOR Baseball Bat (-3). The 2-piece composite construction maximizes surface area for improved contact. The MDX, multidirectional barrel creates a responsive performance. The OLS, Outer-Locking System creates a stiff connection for speed, power and reduced vibration, while the microperforated soft-touch grip with extra tack places comfort and control in the palm of your hands. BBCOR certified.