Chair back heating pads are typically designed to be placed on the backrest of a chair, sofa, or even a seat in the car. They often come with adjustable heat settings, allowing users to customize the warmth according to their personal preferences. The primary purpose of these heating pads is to provide soothing heat to the lower and upper back, which can be beneficial for those experiencing discomfort due to muscle tension, chronic pain, or simply the coldness associated with winter months.