Designed to provide superior protection, these fluid-resistant masks also offer very high filtration greater than 99% bacteria filtration efficiency at 0.1 microns to help guard against air-borne pathogens. All shields have a non-glare, fog-free, wrap-around eyeshield that assures maximum eye and facial protection. Both shield masks offer a polypropylene facing with an anti-fog cloth strip to help prevent fogging of prescription eyewear.