Combat 2016 Madison Shipman Multi Wall 9 Fastpitch Bat Seamless Construction - Refers to thousands of continuous strands of fiber which run through the length of the bat from knob to end cap There are no cuts, slices or "weak spots." Performance Enhancing Disc [PED] Technology with variable stiffness provides optimized barrel compression to make ball explode off the barrel Features 2 1/4" composite barrel Approved for play in all associations Approved by Madison Shipman