This is another mask. The pattern is from itself is from CraftPassion. In the tutorial by a retired nurse shows an alternate way of making the mask-like how to add the nose piece. There have been a lot of discussion about putting in pocket and what other materials to add as a barrier. Vacuum bags are used in many of the tutorials but as the non woven barrier interfacing has been used. In some it is added when the mask is being made and in others it is being added to the pocket so it can be changed. https://www.youtube.com/watch?v=fySsaOojEVM&feature=youtu.be&fbclid=IwAR2SBbTb8UmspnSaTV-uafDEanKhwpE4qFda5PQcUaCkyT9sOXxxCLvxcVE