5 Layer Protection KN95 Breathable Face Mask (50 pcs) – Protective Filtration with Comfortable Elastic Ear Loop | Non-Woven Polypropylene Fabric. <br><br> Our KN95 Disposable Face Masks<br> Certificates - These KN95 Masks were manufactured in an FDA Certified Factory. <br> Testing Report - These KN95 Masks passed "GB2626-2006" Testing. The testing results for these masks averaged over 99% (The requirement is 95% or greater).<br> BFE Report -These KN95 Masks passed the BFE Testing Report, with an average of 99.9%.<br> Filtration Levels - These KN95 Masks have 5 layers of protection, instead of the industry standard 4 layers. <br><br> Important Notes:<br><br> These KN95 Masks, were personally watched over during their whole production process by my team. We literally took hundreds of production samples and tested them over the course of 2 weeks, while our order of KN95 Masks were being produced. Most sellers on the internet right now, are selling you goods that they bought from a third party or a factory they have never even heard of or been too. My team, lived on site from the beginning of our order, to the end of the order. I can confidently say, that these masks are rated to perform at the highest standards.