For serious preparedness or professional use, check out the SGE 400/3 Gas Mask. This is a legit, military-grade full-face respirator designed for NBC (Nuclear, Biological, Chemical) and CBRN threats. It's the real deal, made in the USA. The coolest feature? It has THREE 40mm NATO threaded ports (center, left, right) so you can run multiple filters for longer duration or different threats. The lens offers impact protection (meets EN 136 Class 3 standards). It comes with a comfortable, fully adjustable 6-point head harness for a secure seal. This is for the Regular size, which typically fits most adults (Medium/Large). Important: Filters are NOT included and must be purchased separately to make the mask functional. It's brand new, with a manufacture date of 2025, and meets CE, EN:136, and EN:148 standards. Whether for professional response, training, or serious contingency planning, this is a top-tier piece of protective equipment.