New Mizuno 340451 Silhouette 13 Fastpitch Softball Bat White Blue Black few scuffs and worn knob. a cozy oversized collar and Black Purple Gold a cozy oversized collar and a comfortable stretch hem and cuffs for a flattering fit and the DeMarini Insane INC16 is another product that shows why ISF approved Zone: creates a massive sweet spot by adjusting composite angles in 10 specific zones across the barrel Double wall: gives you higher peak performance right out of the wrapper with a larger sweet spot for more power and forgiveness 2 piece link: significantly reduces vibrations to the hands to give you the amazing feel of solid contact every at bat Cylinder seaming: allows for consistent performance and durability across the barrel ASA