Before your ears start to hurt, prepare yourself! Warm Boa Ear Muffs ⛄️❄️ They fold up compactly and fit neatly in your bag or pocket ☺︎!! Many northern fishermen are also users of this product♪ This type goes around the back of your neck, so your hairstyle won't be ruined and it won't slip. It has ventilation holes, so you can still use your smartphone! With a simple design, it can be used by people of all ages. (˃̵ᴗ˂̵)!! The ear muff part comes in two sizes. This is the regular size. ▼Color → Gray ▽Size → Diameter of the ear muff part: Approximately 12.5cm