"The Gerson NIOSH Approved N95 Particulate Respirator is a traditional, 3-D cup-shaped respirator with away-from-the-face comfort. Meets CDC guidelines for TB and influenza control. U.S.A. Masks Included qty. 20, NIOSH Approved Yes, Adjustable Strap No, one size fits all, Exhalation Valve No, Odor Relief No, Respirator Type N95. Folds flat for easy storage and portability Latex free Durable, ultrasonically welded head bands Fluid resistant Meets CDC guidelines for TB and influenza control Pack of 20 respirators, cupped and stacked"