New Marucci CAT9 USSSA Senior League Baseball Bat, 2 3 4" 30 20 Blue Red Size:30 20 The 2020 Proven is a CM4000TM RHT 33.5 In Adt Bk Tn The 2020 Proven is a 1 piece bat built with high performance C1C composite and was designed to minimize negative vibrations and increase the trampoline off the barrel ATAC Alloy Reinforced With Carbon Core Technology Utilizing a three stage thermal treatment process 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