Main Material: Polyester Color: Gray only Specifications: Knit 【-10 Degree Cold Protection】The ear part is large, providing excellent windproof and heat retention! This ear muff is overwhelmingly popular for its high quality, combining warmth and durability, using a fluffy material representative of winter. The fluffy, rounded fur-like material reminiscent of sheep gently wraps the ears and keeps them warm. It provides a comfortable warmth with a soft touch and excellent heat retention. No need to worry about your ears freezing even on the slopes in mid-winter! 【Adjustable Size】The ear warmer's arm part uses a flexible slide rail frame with moderate elasticity, allowing for slight size adjustments depending on the head size. It fits securely because it hangs from the back of the neck! A cable-shaped piping is applied around the perimeter. By outlining the fluffy muff, it is finished stylishly. It can be used casually by both men and women. It has a sense of stability, so it is difficult to slip off, and it is also recommended for sports! 【180-Degree Foldable for Convenient Storage】This back-arm type ear muff allows you to not worry about your hairstyle! With a simple and clean look and a color that blends in with your outfit, it's perfect for commuting to work or school. The arm part is made of a material with moderate flexibility. After use, simply hold the left and right parts that touch the ears and twist them to make them compact, and you can store them in your pocket or bag. It's easy to twist with both sides, requiring no time or effort, and is a very convenient foldable type for when you're out and about! 【Safe and Secure】Your ears are not blocked, and you can hear sounds while wearing them. Unlike flapper hats or headphone-type ear muffs, you can easily hear the surrounding sounds while wearing them, which is stress-free. It can be used regardless of head size. Unlike headphone types, it won't be loose, and your head and ears won't hurt even if you wear it for a long time. It remains clean without any particular deterioration even if used quite frequently. It's made of a fleece-like material that is resistant to shedding and pilling. 【Great for Winter】The ear muff uses an exquisite fleece lining that provides a soft touch and warmth, enhancing heat retention. The surface looks warm, and the simple design gives a smart impression. It is recommended for commuting to work or school, as well as for those who work outdoors for long hours, when driving a bicycle or motorcycle, shoveling snow, camping, jogging, running, and walking.