Sperian SAF-T-FIT Plus Disposable Respirator, Filter Class: N95, Type: Particulate respirator with boomerang nose seal, Style: Disposable with N1125 molded cup, Size: X large, Packaging Qty: 20 per box. Sperian respirators offer a fiber that ensures 95 percent filtration efficiency against non-oil airborne particles. Both the molded cup style and flat fold version offer extremely low breathing resistance creating a mask that fits, looks, and feels like a standard surgical mask while offering the benefit of respiratory protection. The exclusive design and shape contours with the natural shape of the face while minimizing pressure points. Dual welded head straps keep the respirator comfortably on the users face.