The Command is a strong asymmetric pearl, which together creates excellent mid-lane and continuation. The core and cover are all-new and have been developed to produce more motion from a shiny pearl than seen before in the Columbia 300 line. DynamiCore is Brunswick's industry leading innovation in outer core technology. This leap in bowling ball technology is a more durable outer material that yields less compression upon impact increasing hitting power and creating an undeniable difference in sound and pin carry. Brunswick’s patent-pending Durability Optimization Technology (DOT) represents a revolutionary change in the way bowling balls are manufactured. Developed by Brunswick engineers with one goal in mind – to significantly reduce cracking in performance bowling balls. Columbia 300 recommends Powerhouse Energizer Ball Cleaner to keep the Command performing at its best.