Here is a heating pad that helps relieve your pain. The UTK Infrared Heating Pad can be used to target your back, shoulders, waist, hips, legs, and arms. It has adjustable heat from 103 to 159F and time settings from 0-240 minutes. It has a 4-hour auto shut-off function built-in.
This heating pad is flexible enough to wrap around your body parts. This particular version measures 23.5 x 16 inches.