Deep Tissue Massage Ball: Firmer with more prominent bumps than standard OrbExtra firm logo pad for aggressive single point releaseMulti-directional roll provides focused massage4.5" diameter high density ball provides deep tissue massage to: IT Band, Hamstring, Quadriceps, Calf, plus more Non toxic, latex free closed cell EVA/polyolefin foam Deep tissue massage: 1. Reduces muscle fatigue and tightness, 2. Promotes flexibility, 3. Enhances performance *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*