I used to hike and camp quite a bit in New Hampshire and bought much equipment there for that purpose. One supplier, who produced much of the equipment they sold was Ragged Mountain in Intervale, N.H. The owners retired and recently a new investor has resurrected the business. With nothing better to do I made a quick pass of some of the outdoor equipment web sites I used to frequent including Ragged Mountain which is now making face masks. https://raggedmountain.com/