- Mask comes with one (1) PM 2.5 filter - 120x80mm standard size, 5 times layered, made from non-woven fabric and active carbon. - Adjustable stretch ear loops for comfortable, all-day wear. - Adjustable nose bridge for better fit and to avoid glasses fog. - Shaped paneling for contoured fit to face. - All natural 55% hemp, 45% tencel cotton blend. - Made in the USA in Bellingham, Washington.