I have just done the test on a face nappy 7th April 2021 and can verify all these videos we are seeing on the face mask nano technology to be true. I filled a bowl with boiling water and put the Mask over it. In the video you can see a long thread and a small one they both move. No air is blowing on these. Now you no why they are desperate to keep these masks on you. Remember tv media people make a show for the camera and probs have a Different batch than the public.