Used Marucci, CAT9 USSSA Senior League Baseball Bat, 2 3 4" 29 19 Blue Red 29 19:Blue Red and an articulated knee construction X Small and an articulated knee construction for increased comfort and range of motion New in Original wrapper more forgiveness and more performance while maintaining the same strength as its predecessor Multi variable wall design creates an expanded sweet spot and thinner barrel walls that are more forgiving after off centered contact Ring free barrel construction allows for more barrel flex and increases performance with no "dead" spots Precision balanced barrel results in a lower M Utilizing a three stage thermal treatment process