The winter cold protection and warm ear muffs are made of polyester fiber, which is fine and soft, multi-color optional. The thick padded ear warmer protects your ears from the cold. Bundle up in fashion with these cute and classy ear muffs. Perfect for office, school and home. Measuring For Adult, this custom custom winter warm ear muffs. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: Portable, durable, practical for daily use.