Adjustable design suitable for multiple age groups: elastic elastic band can be freely extended and retracted, suitable for both adults and children. Plush lining for super warmth: soft fleece locks in warmth, ears are still warm in severe cold weather of -10℃. Headband style is comfortable and stable to wear: invisible headband design does not press hair, and is not easy to fall off during exercise and running. Multiple colors available, fashionable and versatile: classic solid color design, easy to match with winter outfits. Adjustable design suitable for multiple age groups: elastic elastic band can be freely extended and retracted, suitable for both adults and children. Plush lining for super warmth: soft fleece locks in warmth, ears are still warm in severe cold weather of -10℃. Headband style is comfortable and stable to wear: invisible headband design does not press hair, and is not easy to fall off during exercise and running. Multiple colors available, fashionable and versatile: classic solid color design, easy to match with winter outfits. Lightweight and foldable to carry: can be stored in pockets, portable and does not take up space for outdoor activities.