Serious Steel Fitness 5" Foam Massage Ball - Deep Tissue Muscle Knot Release Tool - Back, Legs, Shoulders, and More (5" Inch Black Massage Ball)HIGH DENSITY: 5" High density EVA foam massage ball. Great for trigger point release of back, shoulders, legs and feet. TEXTURED: Textured for added grip and deeper massage. BODYWEIGHT: Lean into the massage ball to smash trigger points. Control the pressure by leaning bodyweight into ball. RELIEVE: Rejuvenate, revitalize, relieve tightness in muscles. FAST RECOVERY: Massage Balls are the fast track to better recovery, increasing your mobility, and