Mizuno mp x balls 12 pack these mizuno mp x balls 12 pack of golf balls offer tour performance with a soft urethane cover with a four piece structure of two cores and two covers the large dual core inner promotes less spin and high initial ball speed which leads to increased distance the inner cover is highly resilient and allows for a higher initial ball speed whilst the soft urethane cover allows for outstanding spin control a 330 dimple design enables high and strong trajectory for more d