Amazon.com: carbon filter face mask
100% Cotton mask,Face Mask with 6 Activated Carbon Filter Inserts and Adjustable Shoulder Strap, Washable Reusable Cotton masks, Soft Portable mask, Suitable for Men, Women and The Elderly (3 Packs) 4.5 out of 5 stars 641. $15.99 $ 15. 99. FREE Shipping on orders over $25 shipped by Amazon.