About this item ? APPROVED CBRN FILTER : the Israeli 40mm gas mask filters are made of the highest quality materials, manufactured in Israel and approved by the IDF, designed to cope with nuclear, biological, and chemical hazards. ? LONG SHELF LIFE - EXP 2043-2044: the filters are wrapped in a high-quality aluminum foil vacuum package. (The presence of air in the package does not impair the shelf life of the filter, as long as the plastic lids on both sides of the filter have not been removed ) ? COMPATIBILITY : The CBRN filters are compatible with all military and civil gas masks, Infant & child gas Mask and CBRN respirators equipped with a 40mm NATO filter connector ? EASY BREATHING : The filters are designed to filter harmful particles, and to provide the highest protection, while allowing the user to breath easily during extended wear and operating hours. ? SUPERGUM CBRN filters were designed specifically to protect against various survival threats, including nuclear, biological, and chemical risks ? Expiration 2043- 2044 (printed on the package) ?The filter is supplied with an outer plastic package. The presence of air in the bag does not impair the shelf life of the filter, as long as the plastic lids on both sides of the filter have not been removed. › See more product details