Adjustable Heat Settings & Timer Function: This heated mattress pad offers 9 distinct heat settings and a 2/4/6/10 hour timer function, allowing you to select the most comfortable temperature while sleeping, and set the duration of heating without having to worry about turning it off ETL Safety Certification: This electric heated mattress pad is ETL safety certified, and the accompanying controller has an automatic shut-off device in case of malfunction or high temperature, which ensures your safety Premium Material: The surface of this heated mattress pad is made of high-quality microfiber, providing a soft and comfortable touch. The heating wires are evenly distributed throughout the pad, ensuring consistent warmth 360 Deep Pocket Design: With a deep pocket of 8-21 inches, this heated mattress pad fits most mattresses. The elastic skirt keeps it in place, ensuring it stays snugly over your mattress Easy to Clean: The electric mattress pad is machine washable using cold water and a gentle cycle. Remember to remove the controller before washing. Do not bleach, dry clean, iron, or tumble dry.