This mask is NIOSH approved and meets 42 CFR 84 requirements for protection against solid or liquid particles (excluding those containing oil). This mask features an active carbon filter. The contoured aluminum nosepiece can be shaped for personal adjustment to provide a close fit and the low profile design lets you see without any obstructions and can be worn with glasses. Features include a hypo-allergenic micro-fiber filtration media for enhanced protection, a soft, non-irritating lining, a comfortable inner foam nosepiece, pre-stretched durable head straps, and high quality materials and molding process which improves the collapse resistance of the shell when worn. Ideal for blood-borne pathogen hazard spill kits.