2025 MAV-1 Tee Ball Bat Features: 1-Piece Bat Construction 100% ALX100 Aluminum Alloy Design Concave End Cap All-Sports Bat Grip Light & Balanced Swing Weight 2 1/4" Barrel Diameter -11oz Length to Weight Ratio USA Baseball Stamp of Approval Legal for Pony, Little League, AABC, Babe Ruth, ...