KN95 ultra-high quality mask with FDA and CE certification. Made of environmentally friendly material, moisture-proof, non-toxic, non-irritating, soft and comfortable. Professional Three-dimensional protective mask can help to protect you from dust and weather, bacteria, virus, dust, pollen, and smoke allowing you to breathe normally. The particle concentration inside the mask is more than 95% lower than the particle concentration outside the mask. An adjustable nose seal works for adults and kids.