The new wilson staff dx3 urethane is the worlds softest urethane ball at 55 compression this ball rounds out the dx2 family by offering the softest feel for the better player while guaranteeing maximum distance off the tee and best in class spin performance around the greenthe worldrsquos softest urethane golf ballthe 3 piece 55 compression duo urethane is designed for the feel player who demands tour performance spin and the softest feelinner mantle layerthe dupont hpf inner mantle layer