Activated Carbon Dustproof Dust Mask - with Extra 3 Filter Cotton Sheet and 2 Valves for Exhaust Gas, Pollen Allergy, PM2.5, Running, Cycling, Outdoor Activities Compact, lightweight and flexible design Adapts perfectly to the face and offers a full range of vision without interfering with other eye or ear protections High level of N95 respirator protection,activated carbon mask filters out 95-percent of exhaust ,pollen , chemicals, fumes and other irritant dustsProtects against dust that can cause lung disease. Package includes activated carbon masks,Extra 2valves and 3 filter cotton for replacement. 100% QC & money back warranty : 100% quality checking before we send it to Amazon warehouse, we have 100% faith on quality and provide 30 days money back warranty