Made of Polyurethane Material. All-Day Comfort soft breathable Mask is able to block dust and air particles. Washable and Reusable - Economical Compare to the Disposable Face Mask. Hand wash only (No Machine Wash and Air Dry) Fits Most Adults. Returns: Due to the Nature of This Item, We Do Not Accept Any Returns once the item is sold. Important notice - wash mask before first use. PU Masks are Not FDA Certificated. It Is Not Medical-Grade Mask and is Not Guarantee to Prevent Catching or Spreading illness.