The 2015 edition features a larger inner core and thinner urethane cover adding yards to the long game of mid/high swing speeds. The cover thickness is reduced to just 0.5mm increasing velocity from the tee while a 330 dimple configuration creates a highly efficient flight.The MP S is a high feel golf ball that works great for mid to high swing speeds weve matched this ball to players who like a little spin to help their ball flight said Alex Thorne Head of Tour Operations. Its still very responsive around the greens for guys who like the ball to check up.Dubbed the ball that loves to spin on its introduction the MP S is Mizunos softest most responsive ball. The 2015 edition maintains that trait whilst adding the dimension of increased long game distance.Features: Refined Urethane Cover Reduced to 0.5mm thickness for increased initial velocity. 330 Dimple pattern Configured for more stable ball flight. 3 piece construction Adapted for high ball speeds and responsiveness.