10-Pack Viaex Technologies 74420 O2 Nano Mask Adult Large (L), Gray 10-Pack Viaex Technologies 74420 O2 Nano Mask Adult Large (L), Gray Pack of 10. Not Individually Wrapped. No Filters. New, Good condition. With this cutting-edge technology, the O2 Nano Mask effectively stops 99% of PM2.5 particles, dust, and other air pollutants Pollen, dander, and other allergens Bacteria and other germs Harmful gases Smoke (including from wildfires) and other fumes. The O2 Nano Mask is machine washable and sports a refreshingly minimalist design with a focus on comfort. It?s made to fit in with your everyday life from your commute to your vacation and everywhere in between. Each mask has a sleeve to hold a filter for added protection against most airborne pollutants. For best performance, users should replace the filter once breathability noticeably decreases, ensuring continued comfort and protection. Listed By: Gabe (The Help Resale Team) "In matters of style, swim with the current; in matter of principle, stand like a rock" -Thomas Jefferson (A positive moment brought to you by Help Resale) About Us Welcome to Help Resale, your go-to consignment shop where value meets quality. At Help Resale, we're dedicated to providing you with an exceptional shopping experience, whether you're looking to find the best deals or consign your items. Need to buy a product, but don't see it in our store? Please feel free to reach out to us and we will help you find it! Help Resale 7200 Fair Oaks Blvd Suite 120 Carmichael CA 95608 Business Hours: Monday-Friday: 9:00 am to 5:00 pm (PST) All product and company names are trademarks TM or registered trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. (description exceeds maximum possible length)