Heating Pad for Pain and Sore Muscle Relief This electric pad helps you get rid of back shoulder pain or cramps by relaxing your muscle with hot warm therapy, and reducing aches. This pad is dry-heat only, please avoid using it in moist conditionSafe to Use with ETL-CertificateThis heating pads are made with premium material and built to be of high quality, you can use it with confidence if use according to the User ManualSoft & Comfortable Surface The pad is made with 100% Polyester, making it soft and warm to touch and cover your neck, shoulders, back, knee, leg, foot, abdomen etc6 Levels The controller has a big switch so you can easily set the temperature between 6 levels, The controller is ergonomical to interact with and comfortable to holdMachine-Wash-able You can detach the cord and wash the pad by hand or by machine by following the guide on User Manual