•Specific standard offered: The description lists multiple standards, but doesn't clarify which one applies to this specific mask. This is crucial for understanding the protection level.
•Design details: Information about the mask's design (e.g., 3D shape, ear loops, head straps) and material composition is missing. This can impact comfort, breathability, and fit.
•User reviews: Independent reviews and evaluations can provide valuable insights into real-world performance, comfort, and fit.