Electric foot massager heater built-in massage balls will provide life-simulation kneading and rubbing experience to effectively relieve suffering pain and aches, release stress and pressure from foot, calf, ankle and leg muscle. smart hot compress function can promote the blood circulation and activate the cells activities to achieve better stimulation effect and heating therapy, and when combined with uniform pressure and constant support, it will easily help you relax and get rid of body fatigue after all days working or long time standing. electric foot massager shiatsu kneading calf muscles hot compression deep tissue muscles heated roller relaxation relief stress.