3 Layers of Material-It's made of 3 layers of high-quality non-woven fabric; it has a stronger filtering effect and breathable Masks Disposable masks for protection are using for personal protection 50 pcs. General face use mask. Not for medical use. These masks should be disposed of after each use Adult face masks are suitable for office home salon cycling grocery store and all the indoor and outdoor activities. It’s a best safety mask to wear it when you travel through congested airports bus terminals malls party and busy city streets Keep you from dust haze smoke automobile exhaust etc.