Half Mask Respirator, Mask Size: S, Facepiece Material: Silicone, Cartridges Included: P100, Configured For: Dual Cartridge, Connection: Threaded, Head Harness Material: Elastic, Polyethylene, Polypropylene, Suspension: Yolk and Cradle, Includes: (2) Mfr. No. 7580P100 Cartridges, (1) Half Facepiece Respirator, Standards: NIOSH