2010 Worth PST Quad Fastpitch Softball Bat * Handle stiffness & barrel flexibility optimized to provide maximum batted ball speed * Performance Shell Technology utilizing the thinnest shell designs for maximum performance * Ultra thin taper, 50% thinner for maximum weight reduction & maximum bat speed * Worth's strongest aluminum allowing for thinnest walls & shells for maximum trampoline * Thin & textured grip for maximum bat control & durability * Approved by ASA, USSSA, NSA, ISF and other Association * 1 year warranty