Soft Flannel & Easy Care: The xl heating pad is made of super soft and comfortable flannel, which provides maximum comfort to your body and fits well to every part of your body. Plus it's machine washable, offering you great convenience in your daily life. Moist & Dry Heat Option: Enjoy traditional dry heat or moist heat therapy that moist heat provides deep penetration for more effective relief. Simply spray a fine mist on the surface of the heat pad and enjoy high relaxation. 2H Auto Off & Overheat Protection: The default 2 hours auto shut off feature provides a safer user experience and avoids discomfort from excessive heat. NOTE: For safety, please do not lie on and fold the xl heating pad. 3 Heat Settings: The large heating pad with 3 heating settings ensures you can adjust it to the temperature you want, providing customized heat for your back, knees, legs, neck and shoulders. Better for Back Pain Relief: The 17x33 extra large heating pad can fully cover your shoulders and back, help improve blood circulation and reduce body aches, stiffness and pain.