Cotton,spandex,polyester Imported Note: The earmuffs themselves do not have electronic or noise reduction functions. You need to wear the included sponge earplugs to reduce noise Comfort: Our sleep earmuffs are crafted with a plush and soft material that provides a luxurious and cozy feel against your ears. The gentle fabric ensures maximum comfort, allowing you to relax and drift off to sleep effortlessly. Adjustable Design: With adjustable sizing options, our 2-in-1 sleep masks can be easily adjusted to fit your unique head shap. The right sizeensures a secure and comfortable fit, preventing any discomfort or slippage during sleep Wider Area: The extended area of the headband covers the whole ear from the cold wind. It can snug fit over your ears and stay in place. Even when youre exercising or sleeping, it wont slip off Versatile Use: These blackout eye masks are not only suitable for sleeping. They can also be used to warm your ears when exercising outside in the cold winter. Their portable design allows you to take them anywhere Experience comfort with our plush and earmuffs. The adjustable sizing ensures a secure and fit, while the reflective design allows for easy location in the dark. The extended headband provides wider coverage, protecting your ears from cold wind without slipping off. Take them anywhere and enjoy a serene experience.