Studies have shown filtering facepiece particulate respirators can provide protection equivalent to a rubber facepiece respirator, at a lower cost with greater convenience. Lightweight construction contributes to increased wearing comfort. Advanced Electret Media (AEM). Adjustable noseclip provides a custom fit and secure seal while reducing the potential for eyewear fogging. Respirator Type: Half-Face Mask; Rating: N95; Resistance: Non-Oil Based Particulates.