... heated FIR tech,therapy function,low price pad Far infrared heated therapy ppad,therapy pad,heating pad,therapy pack MHP-1215.ANPAN Features ... :1. Far infrared ray generated by this therapy pad will penetrates into skin for 3-5cm,thus will activate ... ,unknow painness,injured wound etc.3. Especially suitable for those protect against cold,pain on waist,cold hand and feet, arthritis ...