Total 3 layers, non-woven fabric, high density filter layer in the middle and skin-friendly composite fiber. CE certificate which is need by EU FDA certificate which is need by The USA Soft elastic earloop,extra-soft ear loops eliminate pressure to the ears. Inner layer is made of soft facial tissue, no dye, gentle to the skin.Thick 3-layer masks. Size fits most these face masks are suitable for adults making them ideal to keep in your home in case of an emergency. Suitable for many occasion - bad weather, fog and haze, hospital, flu season, dust weather, snow weather, building site etc. Worker, cleaner, builder, doctor, student. Great for outdoor dust, dense crowd, cycling travel, daily life and other scenes. Price is adjusted according to the order quantity Please feel free ask for quotation.