The new DeMarini FNX comes with a Parastack composite barrel. Two piece design creates the ultimate in power transfer on contact while helping to kill any vibration you might feel in your hands. New "Seismic" end cap is made with the strongest materials DeMarini could find, and help push energy back into the barrel of the bat on contact rather than letting it escape. The FNX softball bat is built for power and has a slight end loaded feel to the bat.