OxiClear Mesh Face Mask 3-Layer With NanoFilter Adjustable Nose Pin Ear Loops (Pack of 5) (Grey)Care Instructions: Washable 3 LAYER FACE MASK Outside layer is mash for super breathability, middle layer is NanoFilter for proper safety, Inside layer is pure cotton for comfort and soft touch to the face. OxiClear NanoFilter Middle layer of the face mask is a NanoFilter layer which provides above 96. 71 PFE and above 99% BFE ADJUSTABLE NOSE PIN & EARLOOPS As we all come in unique shapes and sizes, OxiClear always provides adjustable earloops with