This is a 20 pack of disposable lightweight non woven baby blue face masks with a 3 layer filter system and adjustable nose clip. Breathable, non sterile for general use. Soft, stretchy ear loops. One size fits most. Mask dimensions 6. 7" x 3. 54" (17 x 9 cm). These masks help prevent the spread of germs, protect you from pollen, dust and other allergens. Get a free reusable bag to carry them while supplies last.