●Polyester ●[Fast Heating and Even Warmth Distribution] Experience quick and even heating with our electric heated mattress pad. It efficiently warms up, providing you with a cozy and warm sleep during the cold winter months. The evenly heating elements ensure consistent warmth throughout the pad ●[High Quality Sherpa Coral Fleece for Extra Warmth] Our queen size heated mattress pad is made of high-quality sherpa coral fleece, offering you an extra layer of warmth during winter days. Experience the comfort and coziness with this soft and luxurious fabric ●[Auto-Off Timer and Overheat Protection for Safety] Rest easy with our electric mattress pad, certified by ETL for safety. It comes with a 10-hour auto-off timer, ensuring peace of mind even if you accidentally leave it on. The overheat protection guarantees your safety during use ●[Customizable Warmth Level for Personalized Comfort] Tailor the level of warmth to your liking with our heated mattress pads 4 heat settings. Choose the perfect warmth level to create your ideal sleeping environment and enjoy a personalized and comfortable nights sleep ●[Machine Washable for Hygiene and Durability] Our heated mattress pad is designed for easy maintenance. To keep it hygienic and durable, simply wash it on a gentle cycle and hang to dry after Disassemble the controller. Enjoy the convenience and longevity of our machine washable heated mattress pad