Superior field of vision offers an unobstructed view in critical situations where line of sight vision is essential. Full face piece constructed of soft silicone for excellent comfort, fit and durability. Three-position canister mounting adaptable for various applications. Anti-scratch coated polycarbonate lens is virtually free of distortion. Lens meets ANSI Z87.1-1989 (R-1998)2 standard for impact and penetration resistance. DIN-threaded 40 mm connectors make attaching and removing canisters quick and easy. The Small Honeywell Survivair Opti-Fit Tactical Gas Mask was developed specifically for first responders in tactical and riot-control situations. The Opti-Fit provides respiratory protection from certain nuclear, biological and chemical agents in addition to riot control agents. This would include CN, CS and pepper spray. The small tactical gas mask is based on the popular Survivair Opti-Fit full face piece APR. It features the superior Survivair Opti-Fit lens that allows for a virtually distortion-free field of vision, critical in high-risk situations. The Survivair Opti-Fit Tactical Gas Mask was tested against various chemical warfare agents including GB (Sarin) and HD (Mustard-liquid and vapors). Third party testing provides assurance that this respirator is effective against these chemical warfare agents.