Safety Works Toxic Dust Respirator Designed for protection from toxic dusts. Features P100 filters which are oil-proof and block 99.97% of particles 0.3 micron or larger. Respirator features swiveling adjustable straps for improved comfort and fit. The soft-sealing surface is designed to fit a wide variety of faces. Features a centrally located exhalation valve for improved hot air removal and clearer voice communication. The upper head strap features a cradle suspension for improved comfort and fit and lower straps are two-piece adjustable for ease of donning and doffing. Each respirator comes with a hygiene cover to help keep the respirator interior clean when not in use and to help keep the shape of the respirator sealing surface. Meets NIOSH National Institute for Occupational Safety and Health requirements. Style Filter Cartridge, Classification P100, Valve Yes, Pkg Qty 1, Package Type Clamshell