DST 3-D Mask is the perfect mask to wear during the summer because of its extremely soft, lightweight, and breathable material. They are washable and reusable to wear continuously for multiple uses.   Printed Greek letters, 96% Polyester/ 4% Polyurethane, Officially Licensed, (Fashion Anti-Dust Cotton Face Mask Only).  One size fits all and individually packaged. Washable & Reusable. Wash before wearing, hand wash only with warm water, and hang to dry.