The Z-Core Lock and Load is unlike any other bat. The Lock and Load technology allows you to adjust Easton's swing weight according to your personal preference. This model offers three on-the-fly swing weight settings, customizing the bat to each individual player's swing. Optimize your swing and maximize your power with the choice of: the speed setting, providing faster swings, a naturally balanced setting, or XL setting providing an end loaded swing weight with more mass. This bat also delivers one of the longest aluminum barrels in baseball. Within that barrel, Easton's trademarked Z-CORE internal core technology combines with the HMX (Hyperlite Matrix) alloy to deliver the biggest sweet spot and the most pop of any BBCOR barrel.