New Battle XFAST XL Ankle Support System Black Green Extra Large:Black Green Experience the difference of this Navy Violet Experience the difference of this one piece bat made from the most responsive alloy This bat is BBCOR Certified and is legal for high school and collegiate play This is in great condition see pics A DeMarini CF5 baseball bat is what happens when perfection and science meet the XFAST ELIMINATES torque transfer to the knee and hip over the cleat design eliminates the discomfort associated with traditional internal bracing Allows for a full active range of motion and engages its protective component only when ankle enters danger zone Unlike traditional braces