The Speed Regime balls are designed to match golfers' swing speeds. The SR 3 is for better players with swing speeds in excess of 105 mph. It has a profile design that reduces drag at higher speeds. Golf balls fly fastest immediately after impact, which is the same time that drag forces are strongest on the ball, causing the ball to slow down. In theory, by reducing drag the balls should fly farther.Features * Optimized aerodynamic performance, more distance for Tour-level speeds. * Soft urethane cover delivers Tour-level control, incredibly soft feel. * Superior spin separation regulates spin & control, increases ball speed & maximizes distance.