These three-layer face masks are created using 100% cotton muslin fabric. Muslin is a tightly woven cotton material that is lightweight, soft and breathable. They are washable and re-wearable and includes a filter pocket inside. These are not medical grade masks. Runs larger than our normal masks. Comes in a sealed plastic bag with care instructions. * 6" Tall x 10" Long open * Ethically made by women artisans in Thailand