This is a GERG01 Organic Vapor Cartridge. Go1 Style Resistance Organic Vapors Paint Respirator. Assembled with NIOSH approved organic vapor cartridges & P95 particulate filters. Gerson's maintenance-free respirators are ready to use without having to replace worn-out cartridges & filters. These comfortable respirators feature a swept-back design that allows for a proper fit to accommodate glasses & goggles & offers increased protection from particles, vapors & fumes.