This heating pad is made with super soft velvet synthetic fiber material, which is skin-friendly that will not cause skin allergies in addition, it is breathable and soft and comfortable to touch. There are ten temperature settings from 30℃ to 70℃ (from about 86°F to about 158°F) and three timer settings from 45 minutes to 120 minutes. this heating pad quickly heat up in a few seconds and is great for promoting blood circulation, relaxing tired muscles providing pain relief to sore muscles. The LCD controller is easy to operate. It is great for treating pains in shoulders, neck, back, arms, legs, abdomen, and other parts. The power input is 100-120v at 75w. It has a 2-hour automatic shut-off function to prevent the heating pad from overheating. In addition, it is machine washable.