Orb EXTREME™ 3″ Single Point Massage Ball General Application: 3″ Diameter Firm ball provides aggressive single point deep tissue massage to IT Band, Hamstring, Quadriceps, Calf and more Small diameter allows for single point muscle release Multi-directional roll provides focused massage to target specific areas Made from non toxic, latex free closed cell EVA/Polyolefin foam Benefits of deep tissue massage: Reduces muscle fatigue and tightness Promotes flexibility Enhances performance