This chemical and biological mask assembly includes the mask, the M15A1 carrier, two lens outserts, and the M1 waterproofing bag. It is made of molded rubber with filter elements in each cheek, plastic eye lenses, and a voice emitter outlet valve in the front. The A1 and A2 models include the capability to drink water while masked. The mask protects the wearer's face, eyes, and respiratory tract against field concentrations of chemical and biological agents