Features: Gerson disposable respirators are produced from state-of-the-art filtration media, electrostatically charged to enhance filtration and provide low breathing resistance for more comfortable use. The double-shell construction is collapse resistant and will withstand hot, humid conditions for extended product life and economy. The 1730 disposable particulate respirator by Gerson features durable, latex-free ultrasonically welded headstraps to withstand tough use. Adjustable contoured aluminum nosepiece and a soft open cell foam nose cushion helps ensure proper fit and increased worker comfort.