... approved INTRODUCTION:Warm, soothing relief for muscle and arthritis aches and painsAir-activated, self-adhesive backSafe,odorless,micro ... INGREDIENTS:Iron powder, Salt, Activated Carbon, Water, and Activated Charcoal.REFERENCE DATA: Product NameHeating TimeAverage TemperaturePeak ... use, they can be easily removed and are particularly skin-friendly. we are manufacturer! neck and shoulder warmer pad