Leather shoulder bag with extra pocket with zipper on the front. The bag itself also closes with a zipper, and has a removable shoulder strap and wristband.
PM2.5 filter consists of 5 layers. You put the filter in a mask with a filter opening. A filter can be used for 5 to 7 days. The filter offers extra protection against bacteria, viruses, particulate matter (pm.2.5), pollen, exhaust gases etc.