This Polish Military MP4 Gas Mask is nearly a direct copy of the legendary Vietnam-era U.S. M-17 "Bulldog" Gas Mask. These, however, were manufactured for the communist Ludowe Wojsko Polskie (Polish People's Army) during the late 80's in preparation for a massive land war in Europe. This is a full-featured design intended for military use, complete with secure 6-point straps, large lenses for wide field of view, and of course a speech diaphragm for better communication with the other members of your unit. Includes matching cheek filters and a carry bag to haul it all. A must-have part of Cold War military history. Large clear lenses for generous field of view Speech diaphragm for enhanced communication 6-point adjustable head straps Includes filter set and carry bag Designed for adults, one size fits most For collectibility only, not for safety use