THE MASK'S DESIGN- 3 Layers of Fabric -Printed outer fabric 96% viscose, 4% elastane, Solid outer fabric 100% organic cotton-Middle and inner fabrics are 100% organic cotton - Nose-wire is flat and giving an optimized faceseal for best filtration- Washable and reusable- Filter Layer ("tea towel") shown to be 83% effective on filtering 1-micron particles and 72% on 0.02 microns particles based on a Cambridge University Study.- Can be used on its own or as a cover to extend the life of surgical or n95 masks