
This is effective when you need to carry things and you are breathing behind a box that you are carrying up to three stories up so your mask needs a bit more space but isn't overly flexible I would like that sitting in a room with other people, it makes your face itch. at least it was for me. before I was vaccinated I used it a lot; It actually bothered me, one of the reasons I went and got vaccinated. The constant wear has an end. A family member used to call it "an exercise band for your nose" my nose isn't long. they just mocked me