ADWIT KF94 MASK Enhanced Protection We adopt premium non woven fabric and melt blown fabric, high quality and protective. KN94 mask has 4 layers totally, outer 2 layers of non woven fabric for blocking small particles in air, inner 2 layers of melt-blown fabric for filtrating fine particulate matter in air. Each layer paly its own role in the protection, and the combination is for better protective effect. Why Choose KN94 Masks? ADWIT Disposable KN94 Masks Black, White, Blue, Greay Diffrent colour Available 4 ply layers enhanced protection, 2 layers of non-woven fabric for blocking small particles in air, 2 layers of melt-blown for filtering and absorbing small particles in air.There is a metal nose clip embedded in the nose bridge, you can press down the nose clip for fit. The widened elastic ear loops can reduce the tension on ears. SKIN-FRIENDLY & BREATHABLE The mask was made of durable high quality washable cotton fabric，can be use to outdoor and dust shield but thin enough to smooth breathing Elastic Ear Rope The ear rope is elasticit's not easy to breakIt is very Soft for ear loop conformable mouth. Free size for unisex. 4 Layer High Density Filtration, protect every breath Outer Layer non woven Fabric Blocks Flying Dust, etc.High-efficiency filter cotton filter large Particles.Melt blown cloth filter layer filter rate > 95%.Soft Breathable Non- woven fabric Easy to Breathe, Skin friendly. Adjustable Nose Pin beam strip It can easily adjust the bridge of the nose without strangling the bridge of the nose.The Flexible nose strip ensures that the mask fits your face perfectly. The 4D design leaves enough space for your mouth to reduce friction. Light and breathable 4 Ply 3d Face MaskLight and breathableSuitable for daily use.it is convenient to carry. DUSTPROOF PROTECTION with 4-LAYER! 4-Layer Protection with advanced high-quality filters using a filtration system filters out 94% 0.4µm particles and protects against small particles.Each mask is packed individually for hygienic purposes.