Why should we need the KN95 mask: are you now troubled by dust chemicals, particles, virus, and bacteria do you want to enjoy a safe life are you live in haze days, dust, vehicle exhaust, air pollution our environment is full of dust, haze, vehicle exhaust, air pollution, and the kn95 mask can keep you from 98% dust, dirt, pollen, allergens, fumes or particulates that effect you breathe in the air. Special features: - material: nonwoven pp features: breathable, soft lining, latex and fiberglass free application: hospital, medical, dental, daily use. Style: elastic ear-loop or tie on breathing resistance (delta p)99%, particle filtration efficiency(bfe%)>99%. Product features: breathing easily skin cared and comfortable in wearing adjustable fitness between mask and nose with nose clip and earloop health and environmental protection materials moisture-proof dust mask with valve anti-dust, kn95 pm2.5, bacteria, fog, and other harmful grain. Specification: 1. Materials: non-woven fabric and cotton 2. Uses running, cycling, riding, motorcycle, woodworking, lawn mowing and other outdoor activities,3.No need for separate filters. Other uses: - chemo surgical, spray-paints or paintings, dyeing, garages, mining, factories of electronic aid and foods, disinfecting, insalubrious workshops.4 . masks are washable but they are reusable.