The Urban Air Mask 2.0 is designed to provide protection from air particles, pollen, smog, dust, allergens, bacteria, and smoke. It is tested in a world-class Swedish laboratory (RISE) and has results equivalent to the American N95 or European FFP2 performance. The mask is adjustable around the ears and comes with a head strap for a personalized fit, as well as a 3D memory nose-foam and an adjustable nose clip to minimize air leakage. It is made with high-quality materials in Sweden and is treated with Polygiene to protect the outside skin-fabric from bacteria and germs. To find the right size, measure the distance between the lower end of your eye to your chin.