WHY OPTITECT DISPOSABLE FACE MASK? 3 Layer Disposable Face Masks FDA Approved CE Certified Most Trusted Health and Hygienic Brand in UAE OptiTect mask construction allows for a standard fit across the board, allowing you to knot ear loops if necessary — or expand the folds of the mask to fit a larger face. Because of their near-flawless design, these masks can be worn effectively on their own or beneath a cloth-based mask of your choice. These 50 packs can be useful for smaller offices or spaces where individuals will need to mask up on a regular basis.