The new and enhanced Bridgestone Tour B XS Tiger Woods Edition Golf Balls feature a new patented Reactive Urethane cover which stretches the boundaries of what is possible with a traditional urethane ball. The revolutionary Reactive Urethane cover allows the ball to react to the unique needs of each club and shot. Off the driver, the Reactive Urethane cover acts like a spring proving fast compression time which increases ball speed leading to more distance. With irons and wedges, the Reactiv Urethane cover acts like a suction cup, sticking to the club face longer taking advantage of the lost and groves of the scoring clubs for more spin and control. These golf balls support swing speeds over 105 MPH and are great for golfers looking for tour spin.