The AIRINUM Urban Air Mask 2.0 is tested in world-class Swedish laboratory (RISE) with results showing 98% filtering efficiency against particles down to 0.3μm in size. The Urban Air Mask 2.0 is tested and certified for standards that are similar to the American N95 (Test: GB2626 & Certification: KN95). The mask is reusable and comes with 2 replaceable filters.