Safe: Comes with a built-in 45-minute automatic shut-off to prevent overheating. Health benefits: Provides relief from tension, stiffness and cramps, while protecting your feet from low blood circulation arthritis. Material: Made from soft flannel with a non-slip base. 3 settings: Switch between the heated setting, vibration, or both together. Portable: Lightweight and compact, it's super easy to take with you on the go. Heating pad: Get a USB electric feet warmer. Electric Feet Warmer | Living Social | Living Social