Livingstone Premium Face Mask are used for Non-Therapeutic use. It is made with 3 ply highly efficient non-woven fabric to eliminate loose fibres. This rectangular shaped mask with frontal folds has bonded elastic ear loops or ties for easy donning. Flexible nose clip for better face contour. Masks are latex free and available in blue or green colours. With Particle and/or Bacterial Filtration Efficiency (BFE/PFE) greater than 95%, DELTA P Level = <4 H2O/CM2, Livingstone masks exceed the Australian Standard AS4381 for Level One Barrier protection. Livingstone is probably the only Australian-owned company that undertakes expensive voluntary testing of compliance to AS4381, N95, or P2 for your protection and peace of mind.