GQFOWE Gas Masks Survival Nuclear and Chemical, 2 Set One Size, Grey-2. [Package Contents] – Reusable full face gas respirator ×2, 40mm activated carbon filter ×2, filter cartridge ×4, filter cartridge caps ×4, cotton pads ×8, storage bag2. [Comfortable Fit] – This gas mask nuclear and chemical respirator is crafted from food-grade elastic silicone, conforming snugly to the face for superior sealing. The adjustable headband accommodates most head shapes. The respirator body is reusable after cleaning. Note: Do not wear eyeglasses with frames while using this full-face cover. [Comprehensive Protection] – The gas respirator features an integrated anti-fog coating that effectively reduces moisture condensation and heat buildup. The large-sized respirator ensures clear visibility. Its scratch-resistant and impact-resistant design provides full protection for the face and eyes. [Versatile Applications] – This full face respirator is suitable for work environments involving chemicals and coatings, including industrial production, spraying, welding, machining, woodworking, construction, grinding, polishing, and other mechanical tasks. [Universal Interface] – Features a dual-interface design (three-point bayonet and threaded connections). And we will work with you to resolve it to your satisfaction.