These protective masks are manufactured in the USA. They are composed of cotton duck canvas fabric and lined with cotton felt fabric. In addition, it has elastic ear loops for easy attachment and comfortable fitting on the face. The masks are designed to block fine dust, odor, germs, air pollution, and overall safeguard your health. They are suitable for gardening, medical and healthcare workers, construction, nail salons, and people with allergies. These masks are sold by packs. One pack contains 10pcs.