Aero Fuse Cx2 - The recipe for performance. The Nike CX2 Composite Baseball Bat is made with a multi-wall, cross-react carbon composite that provides explosive power. When the barrel hits the ball, high strength, crossed layers of carbon fiber in two independent walls are engineered to allow greater compression, store more energy from the collision and release explosive power at launch. Power belt technology offers full barrel responsiveness. An extra belt of carbon fiber at mid-barrel helps equalize responsiveness from end to end. That means better performance even when you don't square it up. Speedlink system delivers increased bat speed. A speed tuned, flexible composite handle, balanced two piece construction and Aero Cap advanced aerodynamics are designed to swing quicker and more powerfully. 2 5/8" barrel. -3 oz. weight ratio.