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We promise a future you can breathe easy. Next-generation face kasks made by CALAB - a company speciolizing in air quality management CALAB Clean Air Laboratory "Aero Breath Fit" Face masks with a patented replaceable filter. 8x more berathing comfort than a regular face mask. Filter with a three-month lifespan. 70g ultra-light construction. Multistage Filtration. our film inlet valve technology is designed in a way that ewhaled breath dose not flow back and instead exits through the film exhaust port. the filter is designed to purify the air that flows through the mask. Ultra fine filter technology Each filter has a three-month lifespan with patented ultra fine filter technology. Our mask even filters out droplets of exhaled breath through its metal filter. Use of ergonomic medical grade silicone on the inside. Adheres to the face for air leakage prevention. Detachable for easy cleaning and replacement. No worries about fogging glasses. Replaceable colored cover. Choose the color that fits your style. A GUARANTEE OF FRESH BREATHING.