1. HAIR FRIENDLY HEARING PROTECTION: Innovative back wearable and foldable design ensures hairstyles and hats remain intact. Our heated ear warmers will keep you warm and comfortable even on the coldest days without sacrificing style and comfort. 2. STAY WARM: Equipped with an automatic shutoff function (over 55 degrees Celsius), they prevent overheating, protect your ears from cold wind and low temperatures, and extend battery life. 3. FAST HEATING INNOVATION: Enhance your cold weather experience with our heated ear warmers. With an integrated PI heating pad, you can achieve heat in just 3 seconds with 3 heating temperatures (low: 45 degrees Celsius, medium: 50 degrees Celsius, : 55 degrees Celsius) for adapted comfort. 4. FITS MOST PEOPLE: With an embedded elastic cotton thread, these ear warmers provide good elasticity and are easy to wear without falling off. The average size makes them fit most people and ensures a cozy and comfortable wearing experience.