How to Make 3 Layer Face Masks according to WHO (+ Patterns)
Since June, the World Health Organization (WHO) has recommended 3 layer face masks. The ideal mask has a water-resistant outer layer, a polypropylene middle layer (like interfacing), and a water-absorbent inner layer to absorb your droplets. To make a 3 layer mask, you can sew a normal 2 layer one and use a filter insert … Read more