Please make sure to wash them in a garment bag. Mask should not be folded in half flat and aluminum nose insert should not be bent back and forth as it will break. Aluminum nose insert is meant only to contour the nose and stay in that shape.
Premium, Level 3, next-generation face masks with >98.5% Particle Filtration Efficiency (PFE) that meet the highest performance requirements as defined by ASTM F2100-11. (See Product Testing tab for more information)
Pliable aluminum nose insert to create a seal around nose bridge and cheeks
Five layers of reusable, machine washable fabrics
Outer layer: Water/blood repellent fabric tested at 160 mmHg (polyester)
Middle layer: Medical grade filter, Tri-laminate, non-woven, heavy-duty polypropylene