These masks have three layers:1st layer: Anti Dust and anti-respiratory droplets. Fabric is 100% polyester2nd later: Non-woven, breathable, antibacterial3rd layer: Breathable, single 100% polyesterNotes- Antibacterial function will be preserved after many times of washing, but not forever- Do not use in bleach- Tumble dry on low heat- Wash Cold, and separately from other itemsMade in Vietnam