Wilson Staff Fifty : A super-soft core that pushes USGA limits for initial velocity. A equally soft cover that combines power with feel. The new Wilson Staff Fifty fuses opposites, bringing balance to your game. The Inside Story At the core of the 50 performance breakthrough story is an extremely soft, yet highly reactive Nano-Tech core. Wilson has been utilizing Nano Technology in its golf balls since the company re-launched its historic Staff brand. The new 50 is the first ball to incorporate the latest advancements in Nano technology, resulting in a core that is 22% softer than the competition. This ultimate soft core fuels the feel and responsiveness desired by most golfers. Cover Breakthrough Surrounding the Nano-Tech core is a breakthrough ionomer cover blend with remarkable feel characteristics. This proprietary cover blends 50% high speed ionomer and 50% pliable, spin-enhancing ionomer that optimizes spin rates off of different clubs. Off of woods and long irons at maximum clubhead speeds, the high speed ionomer reacts to limit spin for straighter ball flight. With scoring clubs at lower clubhead speeds, the pliable ionomer holds the clubface longer, generating increased spin for more control. PhD Aerodynamics: Like all Wilson Staff golf balls the 50 features the company s proprietary PhD (Pan Head Dimple) design. These larger, shallow dimples (50% more shallow than a standard dimple) promote a significantly higher lift. The sharp joints between the steep dimple walls and flat bottoms help maintain flight at lower speeds while energizing air flow around the ball, reducing aerodynamic drag.