Perfectly balanced to help young hitters fire up their lineup, the 2027 Atlas(TM) 2.0 (-11) USA Bat features one-piece SL Hyper Alloy construction to barrel up more balls. Tuned Mass Damper technology absorbs vibration to create awesome feel and feedback no matter where you make contact. PERFORMANCE TECHNOLOGY: One-Piece Alloy Construction: Stiff, durable design focused on amplifying a player's bat speed to deliver peak exit velocities SL Hyper Alloy Barrel: Incredibly light-swinging and features a thinner wall design for improved performance 2 5/8" Barrel Diameter: Standard barrel size, easy to control for reliable contact Balanced Swing Weight: For the ultimate combination of barrel control and power Tuned Mass Damper (TMD): Internal component within the handle to absorb vibration for better feel - no matter where players make contact Premium LS Pro Comfort Grip(TM): With increased tack and cushion for better control and feel SPD-Gen2 End Cap: Designed with lightweight, composite materials to optimize barrel performance ADDITIONAL DETAILS: NOTICE : Baseball/Softball Bats are only eligible for return if they have not been used.