This is the combo pack of 10 masks. This is a V44++ face mask which is equivalent to the N95 pollution mask, filters PM2.5, PM10, dust, and allergens. Flat Foldable mask which makes it easy to carry Perfect protection against cold, snow, wind, and sun in winter which is a cutout for nose breathing. Venus Mask Pro Plus can be worn as own or under any helmet also be used as a full face mask or hat, open balaclava, neck gaiter, or Saharan style and ninja hoodie. Rated multi-functional headwear for motorcycling, running, biking, trekking, mountain climbing, snowboarding, airsoft paintball, hunting, tactical training, cycling, and other outdoor activities, etc.