We are using these respirators in our surgical practice, as they are FFP2 rated. All the staff love them, as they are significantly easier to work and breath in that the standard melt-blown N95s. They don't get as hot or humid, so we don't have compliance concerns with staff removing masks temporarily, because they need to take a breath. We use them with the clip the come with, and also use an additional headstraps to ensure a tight fit when needed for some staff. These have been game changi...