This Electric blanket is also Oeko-Tex Standard 100 certified, which means that the textile materials used to make this blanket meet the stringent human ecological requirements as verified by the Hohenstein Research Institute. There are health benefits to using a heated under blanket too. It's reported that they can help with arthritis, fibromyalgia, muscle soreness, flexibility, quality of sleep, allergies, sinus problems and even conditions like Post-polio syndrome and Raynaud's Phenomenon.