The Reusable Cloth Face Masks are made of 70% cotton and 30% polyester for a soft feel and comfortable fit. With 3 layers, including a filter layer pocket with pm 2.5 carbon filter, these masks filters most air contaminants including dust and pollution. The adjustable elastic earloop makes these face masks comfortable to wear for an extended time. Machine washable. One size fits most. Each includes 1 mask and 1 filter.