This pack of 20 3M Aura 1870+ N95 Particulate Respirator Surgical Face Masks is perfect for use in a variety of medical and dental procedures. The masks are individually wrapped and sealed for maximum protection and comfort. The masks are made in the United States and have an expiration date of 2026. They are intended for use in dermat, cosmetology, dental laboratory, anesthesiology, dentistry, cardiology, and biological laboratory disciplines. The masks are a great addition to any medical or dental supply and are sure to provide the necessary protection for your patients.