it helps add more weight and mass to the bat at the point of contact in the barrel

balance and power

ASA 2004 and USSSA written on the bat (no stamps)

casting and spinning

New DonJoy Adult Medium Web Tech Knee Brace Brace Green/Black Lime Green/White it helps add more weightSilicone web technology helps absorb shock and shift loads from the painful area of the knee Dual Axis hinges work with the web for improved fit and articulation Compression molded back pad with mesh for maximum comfort and breathability Undersleeve with stash pocket and anti migration technology Reflectivity for enhanced visibility in low light conditions