Knix (Makers of Period Undies and Sports Bras) Have Face Masks — They're Great For Workouts!

Knix Freshfix Air Face Masks are lightweight and made up of three technical layers to block liquid, dust, and aerosol particles. They have 99.9 percent Bacteria Filtration Efficiency (BFE) that evolved from their eight years of experience in reusable technical fabrics, which are impermeable to liquids.