3M N95 Particulate Disposable Respirator includes two strap designs with dual point attachment helps provide a secure fit. It is low priced N95 that features Advanced Electrets Media, adjustable nose clip and nose foam to help provide a custom fit and secure seal. It involves lightweight construction that includes patented filter media with advanced electro statically charged microfibers help make breathing easier for enhanced user comfort. It meets NIOSH 42 CFR 84 N95 requirements and is applicable in bagging, grinding, sanding, sawing, sweeping, woodworking, other dusty applications. It is sold as 20 per box. Failure to wear the respirator during all times of exposure can reduce respirator effectiveness and may result in sickness or death.