Mizuno No Doubt Slow Pitch Softball Bat (ASA and USSSA) NEW rolled end cap is a seamless composite design from barrel to cap, no longer able to remove end cap to alter bats NEW Double Wall Technology provides thinner walls with added durability, allows for higher peak performance out of the wrapper and larger sweet spot Black Array Carbon Mizuno's own high end composite pre-preg allows for Shorter break in period to maximum performance 13 inch barrel Approved for play in all associations: ASA, USSSA, NSA, ISA & ISF