Specification N95 Folding Butterfly Face Mask Printed folding masks (alias: butterfly mask) made by pp nonwoven + pp nonwoven(middle) + thermal drying (middle) + printing non-woven fabric (cloth) + hollow flat. The face mask Size: adult men 14 (high) * 28 (long) cm, adult women 14 (high) * 26 cm (long), Children version 12.5 (high) * 22 cm (long). Packing details : 4 PCS/aluminum plastic bag, 5 bags/box, 48 box/box (960pcs / carton) Application Reference Function: dustproof, PM2.5, bird flu, the virus, haze, automobile exhaust, dust, pollen, particulate matter, bacteria, etc Application: suitable for home made, cycling, rubber, coal mine, fur, batteries, factories, mines, oil, nuclear industry, shipbuilding, arts and crafts, paper making, brewing, crystal, agriculture, petrochemical, sanitation, glass manufacturing, etc http://www.devoling-industrial.com/Protective-Equipment/Non-Woven-Products/N95-Folding-Butterfly-Face-Mask.html