Using blue shop towels in homemade face masks can filter particles 2x to 3x better than cotton, three clothing designers discover after testing dozens of fabrics

· Lindsay Medoff, CEO of Suay Sew Shop, a 30-employee boutique LA clothing manufacturer, wants the armies of people sewing homemade surgical masks to add a specific blue shop towel inside the mask.
· Medoff and two of her friends were appalled by the dozens of mask patterns in circulation today which call for cotton, a highly...