Features1. Electric heated foot warmer uses the latest heating and vibration technology. Providing efficient relief from tension, stiffness, soreness and cramps. Protect your feet from low blood circulation, arthritis, and cold floors. 2. Fast Heating Technology- The fast heating technology provides you warmth and pain relief. This electric foot warmer heats up in a few minutes to provide fast relief to cold feet and aching muscles.This can help to accelerate blood circulation and the healing process of inflamed areas. Feel stiffness and tension melt away when using these therapeutic foot warmer. 3. Both sides are constructed from super soft plush flannel. The flannel material is sheer comforting indulgence. The soft flannel cover will keep heat inside the pad and make you warm. 4. Please note that for safety concern, there are heating wires only at the bottom. The inside soft plush adds extraordinary comfort to your feet.Even though after 2 hours auto shut off, there's enough residual heat to keep it warm.5. Quality Guarantee. We have faith in our product and always back it up with trustful customer service, please reach out to us if you have any questions or problems about our products.SpecificationMaterial: Sole - EVA, vamp - Crystal super soft velvet + Inner filled cottonSize: Up to 28cm feet;5V=2A (10W);Temperature :50 to 55 degreesNote: Use while charging. It is suitable for both feet to be extended into the product at the same time. It is not suitable for walkingPackage Includes:1 x Foot Warmer