Features: 1. Introduction -- 360 fits the face, and the filtration efficiency is ??5%. 2. 4D Support -- Prevent the mask from getting close to the nose and mouth, effectively reducing the risk of spreading bacteria and protecting your makeup and lipstick. 3. Super Protection -- Melt blown cloth filters 0.5 micron particles up to 95%. Effectively protects breathing health. Low resistance and smoother breathing. 4. Ear H ooks -- Use wide ear hooks, less pressure, and ensure your ears more comfortable. 5. With Air Valve -- Designed for the most comfort, these individual masks are painless and adjustable. They offer full coverage of the nose and mouth and are comfortable for extended wear, including air travel. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Material: Non-woven fabric, filter cotton, meltblown fabric, spandex tape, nose strip Size: free size Color/Style:As the picture shown Application: PM2.5 includes: choice 1: 5 x Adult KN95 Mask choice 2: 10 x Adult KN95 Mask choice 3: 20 x Adult KN95 Mask choice 4: 25 x Adult KN95 Mask choice 5: 50 x Adult KN95 Mask choice 6: 100 x Adult KN95 Mask