MOS Reference: Single-use nuisance dust masks for non-toxic particulate comfort in low-hazard environments. Lightweight polypropylene construction with embossed nose bridge and single elastic strap provides basic filtration against household dust, pollen, and non-hazardous nuisance particles. NOT a NIOSH-approved respirator -- do not use for protection against toxic dusts, fumes, or regulated airborne hazards. Suitable for sweeping, yard work, light sanding of non-toxic materials, and general cleanup tasks.