Set of 4 Christmas mask

Mask covering are lightweight/breathable/2 layers/one size. Masks includes pocket filter/ adjustable elastic ear band/4 PM 2.5 FILTER(1 filter per mask) MADE in USA. Other pocket filter options you can use are hepa filter, coffee filter, blue towel or paper towel. Throw away filter after each use. Washable and reusable (handwash recommended and hang to dry) Do not wash the filter. This mask has not been evaluated by