One Size Fits All: The ear muff winter have good resilience, not too tight or too loose, comfortable to wear, can fit your ears tightly and keep you warm all the time. Diameter: 11cm/4.33inch, suitable for most people's head size. Comfortable & Warmth: The folding earmuffs are made of high-quality plush material, soft and thick, smooth to the touch, fluffy and warm. Wearing it can effectively protect your ears against the outdoor cold, allowing you to survive the winter easily. Foldable Design & Easy Storage: Compared with other earmuffs in winter, this fluffy ear covers with foldable design is easy to store. When not in use, it can be folded into a "small hamburger" and put into a storage bag or bag, which does not take up space and is convenient to carry. Fashion Black Appearance & Easy to Match: The simple black appearance of the foldable earmuffs is classic and stylish, highly decorative, suitable for both men and women, and easy to match with various clothing. Keeping you warm and beautiful at the same time. Wide Application: The foldable ear muffs are not only suitable for daily wear, but also suitable for outdoor activities in cold seasons, such as: exercising, skiing, hiking, camping, skating, outdoor work, etc. Keep your ears warm and comfortable when playing in the snow.