Filter for the pocket
Ok, Y'all. I recommend you buy a filter and cut your own, but if you don't want to bother, I have your back. I am using 3M Filtrete, an electrostatic material, non-woven polypropylene, with an MPR of 2200--this is the same spun-bonded material used in N95 masks. If you buy the filters yourself--great!--you will need to disassemble the material from its form, unpleat, then follow my free instructions on how to cut and stitch/tape into an insertable filter. It's not difficult, but I get that some of you don't want to bother or maybe this sends you into a panic. When I wear a mask with nothing in the pocket, I can still smell a perfume-y hand sanitizer that I keep in my car. With one mask, it cuts the smell significantly in this enclosed space. I am now using 2 of these filters in my pocket (2 layers would be close to N95, but if you have gaps in your face mask, you need to work on that by cinching up the elastic or tightening the ties!) and am breathing just fine as with nothing in the pocket. You will need to remove the filters before washing. I don't know how long these filters will last as it's untested as a face mask. I do know these filters are safe--no fiberglass as with other filters. Their longevity depends on how clean the environment is when in use, but breathing resistance will increase as they begin to clog. Be smart, be safe, do your own research (if you find anything out, please let me know!), and wear in good health.
(if you add-on 2 filters with a mask order, you get a $1 price break)