This product is a heating pad, which made from material for practical use. Using high technology heating material, it has a long service life and not easy to break. What's more, it is safe and reliable to use and will make you warmth in cold winter. Feature - Color: Black. - Material: Metal, Plastic. - Size: About 15 x 12 x 0.3cm. - Made from premium material for durable and long lasting use. - Ergonomic design, close fitting and it can be bent, folded for your convenient use. - Safety heat transfer and waterproof sheet, perfect for the back, waist, abdomen, knees and other parts, to achieve the warm effect, blood circu ation for health care. - The products are mainly used in electric heating waistcoat, electric heating gloves, electric heating kneepad, elderly health care products, health care, electric blanket, heating car cushion, and various low pressure heater. - Three gear temperature control for better warm experience.