New DeMarini CF Zen 32 22 Black 2 3 4" Senior League Baseball Bat Gray Red Size:32 22 Synthetic Mesh Rubber sole AmpliFoam Midsole Has "No Return" Etched on the barrel. Synthetic Mesh Rubber sole AmpliFoam Midsole manages moisture Rearfoot GEL Technology cushioning system attenuates shock during impact phase and allows for a smooth transition to midstance Ortholite X 40 sockliner features higher rebound properties while providing excellent moisture management and a high level of breathability Guidance Line Midsole Technology provides a vertical flex groove that decouples the tooling along the line of progression for enhanced gait efficiency walk or the gym Certified for and made to meet all USSSA standards This material is exposed to the perfect temperature for the perfect amount of time