❤ Principle: Heat Sauna Blanket with Infrared Heating Therapy-Using the unique penetrating power of the body, it can absorb far infrared rays. When these rays penetrates the skin, the deep thermal effects of the subcutaneous tissue cause blood vessels and capillaries to dilate, thus promoting better blood circulation and helping to get rid of body toxins and metabolic waste. ❤ Environmental Material: Outside are top grade Oxford Cloth, inside are waterproof PVC with flexible tensile capabilities even in various sleeping position,temperature adjustable from 95℉ to 167℉, time setting from 15 to 60 min., infrared dry heating, 2 zone-temperature control. ❤ Multi-Function: This deeply relaxing treatment is also great for stress relief score joints and stiff muscles you will leave invigorated renewed if you are looking for instant detox pain relief or you just want to drop a dress size.Recovering therapy for shoulder, hip and waist, back and legs. ❤ Security Warning Setting: When the device is abnormal, the temperature is not controlled and it is heated to 85 degrees, the device will automatically disconnect the line, stop heating, and give an alarm for one minute. When the heating wire breaks and the thermal sensitivity is abnormal, the instrument will automatically disconnect the line, the screen will display stop heating, and drop alarm for one minute. ❤ Safety Tips: Please don't put it in a place like sofa or bed to store heat; Pregnant women, hypertension more than 180, severe heart disease and other major diseases are strictly prohibited. Suggestions can be worn thin cotton pajam.