Priced is right and all have been shrink wrapped individually, no other company I purchased from did this. You are putting in your purse and carrying them around, nice to know they are sterile.
Five layers Filter Material: Anti-sticking cloth, Filter cloth, Activated Carbon
Materials: made of activated carbon and non-woven melt-blown filter cloth, 5-layer filter system effectively keep away from PM 2.5 and a range of airborne contaminants
Filters size: 12x 8 cm/ 4.7 x 3.1 inches, Product: 10 Pcs PM2.5 Activated Carbon Filter insert can not be cleaned and should be replaced every 1-2 days. Reuse is not supported.
