1. Material: Polar fleece and composite high-density sponge make the mask warm, windproof and breathable. The composite high-density sponge has a certain waterproof function. Fits the ears and nose while maintaining partial coverage of the neck. Comprehensive surround protection, breathable and comfortable sports fabric, refreshing sweat absorption, no need to worry about sweat residue. 2. Unique design: The plastic nose clip has a certain function of fixing the mask, the double valve makes breathing more comfortable, effectively avoids the fogging of glasses, and has a clear vision during exercise. Face shields are more suitable for teens and women. One size fits most dust and windproof half masks. Easy to adjust how tight you want to wear the mask. 3.Multifunctional: This balaclava face mask is suitable for winter camping, hiking, hunting, ice fishing, hiking, climbing, running, cycling, skiing, snowboarding, motorcycles, riding motorcycles or snow blowing lanes, shoveling snow , work outdoors, go out in extreme cold weather or in other sports and outdoor activities. 4. Great winter gift for friends, family, students, outdoor workers and outdoor enthusiasts! 5. Package Contents: The package includes an activated carbon mask, two valves and a filter for easy replacement. They are easy to clean and clean when they get dirty. The filter can be cleaned 8 to 10.