After few days on my job site, after grinding of the walls, doors and beams began with me to stomach cramps.
Poisoning inhaled too much dust. Nose hair was often white with dirt, despite the masks.
After two weeks of stomach cramps I bought this mask.
Since no poisoning, no smell, color smell is already easily, but not compared to the other masks.
The mask leaves its mark on the face, which are gone after 6 hours. (Wearing the mask often up to 10 hours, with short breaks)
If this mask buy again.
