Features of Disposable Face Mask : Prevents skin irritation, Bacteria filtration efficiency for single ply 80%, for double ply : 85% & for three ply : 97% pleated for full face coverage, adjustable pvc coated aluminium nose clip and soft thread elastic ear bands or lace, filters dust particles size upto 4 microns, sonic sealing & proper placement of folds. Cool & breathable, lint Free.