N95 3D respirator mask with Cooltech valve. Features a 360-degree silicone seal which molds to your face， maintaining the seal even while speaking or moving. As you inhale， the thin， feathered edge of the silicone seal tightens to your face. Includes a molded-in adjustable nose clip which can be shaped to your nose and will not peel off. The internal skeleton prevents mask collapse while breathing and improves the mask's durability. No fog design keeps goggles and glasses fog free. Provides protection against airborne bacteria， molds and viruses including h1n1 & swine flu， protects against allergens， smoke， ash， soot， and fine particle air pollution. Meets CDC (Center for Disease Control) guidelines for TB exposure control. Niosh 95 approved， flame and fluid penetration resistant. Includes adjustable four-point ultrasonically welded head strap， uses no staples.