The outward-facing side of the mask are typically colored and made thicker, tougher and water-impermeable. The inner layers of the mask are made of three-ply melt-blown polymer placed between non-woven fabric. The melt-blown material acts as the filter that stops microbes from penetrating and exiting the mask. Some masks have an attached thin polyethylene faceshield… Continue reading Disposable Face Mask With Ear Loops, Blue, 3-Ply, 50 Box