ALG Health Patriot Masks are particulate respirators designed to provide excellent respiratory protection for the wearer. These American-made N95 masks provide at least 95 percent filtration efficiency of certain non-oil-based particles and meet all guidelines for exposure control. This model also provides liquid barrier protection against the splash and spatter of harmful materials. As disposable particulate respirators, Patriot Masks are intended to reduce wearer exposure to certain airborne particles. They are also effective for construction-related activities such as sanding, sawing, grinding, lawn mowing, sweeping, dry-wall sanding, woodworking and working with fiberglass insulating particles. FITTING INSTRUCTIONS: 1 - Hold the respirator in hand and with the nosepiece at your fingertips. Allow headbands to hang freely below hand. 2 - Wear the respirator firmly against your face with the nosepiece on the bridge of your nose. 3 - Stretch and pull the lower headband over the head and position below your ears. Stretch and pull the top headband on the back of your head above your ears. 4 - Press soft metal to conform snugly around your nose. 5 - Seal Check - To test the fit of a respirator without an exhalation valve, cup both hands over the respirator and exhale sharply. - If air flow is felt, re-adjust/tighten the nose clip and headband straps. 6 - Change the mask immediately if breathing becomes difficult or mask becomes damaged or distorted. 7 - Change the respirator if a proper face seal cannot be achieved 8 - Careful observance of these instruction is an important step in safe respirator use.