This is a generous 14" x 27" unit- nearly twice the size of most standard heating pads. It provides an area of heat therapy large enough to cover the entire spinal area, the length of a hip and leg or all across both shoulders, to effectively relieve pain and relax the associated muscles. This pad produces intense, penetrating moist heat without adding water to give patients hours of soothing relief. It is designed to be hands-free with a user-friendly on/off switch and built-in-timer.