Did this article my wife paid. Even when opening the package I got sick from the stench of the mat. I had to give away some more time and have hoped, the stench 'flies' over time. But unfortunately, not at all. I then presented the mat anyway. And lo and behold - it still stinks. Even after 8 weeks. And I can not imagine that the smell is just me healthy. But the good news is - it works really well. Unfortunately, with this unpleasant side effect.