Features1Thickened polyester, warm in winter with good temperature maintaining ability. 2Not only warm but also breathable, multi-layer mesh fabric with replaceable filter. 3Designed with inner polyester, comfortable and warm, suitable for wearing in winter. 4Anti-fog face cover, effectively isolating the harmful particles, warmer and healthier. 5There are several styles for you to choose from, meeting your different preference.SpecificationItem Type: Head CoverMaterial: NylonColor: Black, Grey (optional)Fabric: Waterproof fabricVelvet: YesLength: Grey classic: Approx. 16cm/6.3inBlack classic: Approx. 16cm/6.3inBlack update: Approx. 17.5cm/6.9in(optional)Cold Resistance: -10Waterproof: YesSize: FreesizePackage List1 x Face Cover1 x Accessory