Adjustable nose-clip for a better fit. Cushioning nose-foam for better comfort. Braided headband for better durabilit. Tetra filter media for better protection. Fluid Resistant – Meets CDC Guidelines for TB Exposure Control. Electrostatically-charged filter media provides low breathing resistance. Latex-free, staple-free head straps for comfort and safety. More durable, double-shell construction for long life and economy. Made in Oman.