ADVANTAGE – Thin 100% aluminum multi-wall design and biggest sweetspot aluminum bat yields the highest performance and maximum trampoline effect. Whiplash – Up to 30% thinner taper for reduced weight and increased bat speed. TST – Thin Shell Technology utilizing higher strength alloys for maximum trampoline effect. Lithium – Worth’s strongest aluminum. Max Endloaded Approved by – ASA, USSSA, NSA, ISF and other associations.