3M's Small 6100 Half-Facepiece Reusable Respirator w/ Head Harness & Adjustable Straps (SKU: 6100) can be configured for protection against certain gases, vapors, and particulates when paired with the appropriate approved 3M filters or cartridges. The twin-filter design helps balance the facepiece and can improve field of vision, while the reusable construction allows the facepiece to be cleaned and maintained for continued use. NIOSH-approved configurations are available when the respirator is used with approved components, making proper filter selection, fit testing, and use according to applicable respiratory protection requirements essential. (3m.com)