3M Respirator Aura 9322+, FFP2 NR D, 10 pieces, with CoolFlow exhalation valve up to 10 x OEL (tool)
For years, I am looking for a mask that I can wear during exercise. Whether against smog or pollen in the air, with most masks earlier times this was very difficult, because the breathing resistance were too high. With effort, the air is scarce and t