3.0”Myo-Fascial ReleaseBall: Small and firm with prominent bumps.Single point myo-fascial release promotes flexibilityDeep tissue massage:1) Reduces muscle fatigue and tightness 2) Promotes flexibility 3)Enhances performance3.0" diameter high density ball provides deep tissue release to: IT Band, Hamstring, Quadriceps, Calf, plus moreNon toxic, latex free closed cell EVA/polyolefin foam *Popfoam is an “injection molded cross-linked closed cell EVA/polyolefin foam resin. It is non-toxic and conforms to EN-71 and meets CPSIA specifications. It contains no phthalates, heavy metals or latex