Mizuno Rejuvenate Softball Bat New x-zone Technology. Multiple composite layers have strategic shape and location to expand sweet spot New triple wall Technology. Provides thinner walls with added durability Black Array carbon: complex lay up design using high end composite pre-preg Reinforced taper with Anti-shock construction added layers in taper improve durability while also absorbing vibrations Cylinder seaming. Eliminates edge inconsistencies between carbon layers