Looking for Answers about DeMarini J3 Softball Bat - Men's?

DeMarini's J3 uses a TR3 F.L.O. Composite barrel to provide a strong, lightweight hitting zone, with an endloaded balance. Stacked barrel construction uses independent walls to create a dynamic springboard surface, with a sweet spot that has huge trampoline effect. The composite handle is designed to provide strength without added weight. Stiff end cap designed to keep power in the sweet spot. 2 1/4" barrel diameter. 26, 27, 28, 30 oz. weight options. Approved for USSSA, NSA, ISA, ISF.