Product name: Autumn and winter cold-proof warm mask Product weight: 146g ± 2g Product fabric: high-density polar fleece fabric Product size: one size (can be worn by both men and women) [Product features]: The hat and the neckband are connected, and there are multiple ways to wear them, which can be adjusted according to your needs; multiple colors are available. The hat is breathable and wear-resistant, and the neckband under the hat can seal the collar to prevent the cold wind from entering. Its professional high-density polar fleece mask fabric has excellent warmth retention, and uses anti-static and anti-pilling treatment technology, which has a soft and comfortable touch.