Zan Headgear Adjustable Face Mask With Pm2.5 Filter Gray . 5 Filter (1 X Included). The Built-in Aluminum Nose Bridge Provides A Secure Fit Creating A Tighter Seal & Reduced Fogging When Worn With Glasses. They Are Soft And Breathable And The Metal Nose Strip Keeps The Mask In Place Even After Hours Of Wear. The Adjustable Face Mask Provides Coverage Of The Nose Mouth And Chin With Adjustable Elastic Ear Loops. Material: 100percent Cotton Package Contents: Zan Headgear Adjustable Face Mask With Pm2.5 Filter