Developed specifically for first responders in tactical, CBRN and riot control situations, the Opti-Fit CBRN Gas Mask provides respiratory protection from chemical, biological, radiological and nuclear agents in addition to Toxic Industrial Chemicals (TIMs) and riot control agents including CN, CS and pepper spray. Durable, chemical resistant butyl rubber face skirt. Optional hydration drink tube. Available in three sizes. Anti-scratch coated polycarbonate lens. Adaptable three-position canister mounting.