[Skin-friendly fabric, machine washable] High-quality flannel, soft material, better heat insulation effect. Remove the cable connector, suitable for machine washing below 30C. Keep the heating pad clean easily and conveniently.[Large size design] 30X60cm large size, flexibly applicable to various parts of the body such as the back, neck, abdomen, thigh, and calf. The proper size makes it more suitable for different parts of the body and effectively relieves pain. PS: This productcannot be used as a seat cushion[Rapid heating and extension cord] This product has 6 setting levels and rapid heating function. You can choose the right temperature, quickly enjoy heat therapy and relieve physical fatigue. The 231 cm extension cord reduces the wiring restrictions andmakes your use more free and convenient.