Each mask is made by CDC guidelines with a tightly woven, double-sided cotton with elastic inserts. All stylist masks are washable and reversible, with solid black on the reverse side. Each has an interfacing filter on the inside. The filter inside is not up to n95 standard but each mask has a pocket to insert your own n95 filter.
Mask Care: Masks arrive unwashed. They are made from 100% cotton so if you try it on and you have room, wash in hot water and dry immediately. It will shrink a good amount. If you love the size, do not wash in hot water. Wash in cold water and hang dry.