PERFORMANCE TECHNOLOGY: EVOKE Alloy Barrel: Designed using extensive player feedback and never-before-seen computer simulations, resulting in an optimized wall design SPD-Gen2 End Cap: Helps transform swing speeds into easy power Tuned Mass Damper: Built within the handle to help dramatically reduce vibration ADDITIONAL DETAILS: Premium LS Pro Comfort Grip(TM): For an unmatched mix of tack and cushion NOTICE : Baseball/Softball Bats are only eligible for return if they have not been used.