This stylish face-scarf and high-tech respirator in one contains a nanofiber filtering membrane that blocks the inhalation of both smog particles and allergens. Urban smog contains tiny solid particles known as “PM2.5” that are particularly dangerous to those with asthma or other respiratory disease. The nanofiber layer captures 99.9% of all dangerous airborne particles, yet allows for the easy movement of air. The face-scarf is stylish and comfortable, with an adjustable nose clip assuring proper fit. It also acts as a warming scarf to moderate the inhalation of cold air that can provoke asthma. Made of Lycra spandex with the added nanofiber membrane, it is suitable for use during walking, jogging, cycling, or other recreational activities, especially in urban areas. Hand washable.