DeMarini J3 Slowpitch Softball Bat TR3 F.L.O Composite Barrel provides a strong, lightweight hitting zone with an end-loaded balance Stacked Barrel Construction is when two or more independent walls create a dynamic springboard hitting surface giving players a huge sweet spot with ball-popping trampoline effect TR3 F.L.O Composite Handle is designed to provide strength without adding weight Big D End Cap is a stiff end cap designed to keep power in the barrel creating a larger sweet spot Hybrid Comfort Grip is a two-piece grip built for ultimate comfort and tack; 12 Month Limited Warranty, approved for play in the ASA, USSSA, NSA, ISA, ISF