Bat features: - 2 5/8 Inch Barrel Diameter - (-3) Length to Weight Ratio - BBCOR Certified - Approved for H.S. and Collegiate Play - Carbon Nanotube Technology (CNT) - Extended Barrel Design - IMX Composite - More mass = more power - Patented ConneXion Technology Reduces Vibration - Power Brigade - Two-Piece Fully Composite Design.