【Fast Heating & Overheat Protection】The heated blanket have 4 heat setting (90°F - 107°F). The fast heating function can warms up your whole body just in short time. Overheat protection enhances safer user experience and further leaves you peace of mind. Insulated heating wire with NTC/PTC helps monitor real-time temperature and prevent from over current and overheating. 【Coziness and Warmth】Ultra soft double-layer polar fleece for ultimate comfort is made of 100 percent polyester. The extra large 77X84in electric blanket gently wraps you in warmth and comfort during cold nights. dfa2