Callaway Speed Regime 3,1-dozen, Golf Balls, White Soft Feel with Tour-Level Control: Soft cover promotes Tour-level control onapproach shots and shots around the green Ultimate in Spin SeparationDesigned For Your Swing Speed: Soft inner core generates low spin off thedriver for long distance Firmer outer core generates higher spin ratesfor more spin and total control with aggressivestopping power on short irons and wedges The thin inner and outer mantles producemore ball speed and reduce spin off the driverfor maximum distance