... protect pain on waist Far Infrared technology thermal therapy padFar infrared thermal therapy pad MHP-E1215A/BFeatures:1. Far infrared ray ... will penetrates into skin for 3-5cm, thus will activate cell, promote blood circulation and metabolism, enlarge blood vessel, remove ... use on back, waist, belly, joint, has a good therapy effect for arthritis, rheumatism, unknow painness, injured wound etc.3 ...