The RZ Mask is a filtered neoprene dust mask that covers the nose and mouth of its user, preventing the inhalation of dust particulates from the air. The mask is equipped with an N99 Active Carbon filter that has been laboratory tested to filtrate 99.9 percent of all particulates as small as smoke, notes the manufacturer. The Active Carbon aspect absorbs fumes and odors for extra protection. Furthermore, because of its specially designed discharge valves, the mask will not fog eyeglasses. The mask is ideal for users operating around aggregate being crushed, truck traffic or windblown dust.
RZ Mask LLC, http://rzmask.com