100% Japanese cotton denim, Natural color.  Traditional Japanese print trim and and Lining.  Gold topstitch.  New foam nose bridge construction, offers maximum comfort.  elcro back. 2 PM2.5 replaceable Active Carbon Filter (N95 compliant), included. Regular size fits most head sizes, large is 1 inch longer.elcro back. 2 PM2.5 replaceable Active Carbon Filter (N95 compliant), included. Regular size fits most head sizes, large is 1 inch longer.