Face Mask Filters Polypropylene LAB TESTED

As recommended by the CDC & WHO (World Health Organization) and Dr. Theresa Tam to wear 3-layer masks. If your mask is 2-layer and has a filter pocket, this product will help you convert it to a 3-layer by using this soft (yet structured) non-woven polypropylene fabric that provided up to 84% filtration when LAB TESTED for a single layer of this product (also called interfacing / interface). Reusable and Machine Washable. Buy Now: www.thefacemask-shop.ca