I am highly satisfied with the ETM floor mat! First, I had imagined a colored mat, but the ratings, certification and the material have me but then moved to this transparent item - and I do not regret it. We have a natural parquet floor, the so beautiful still comes into its own. By sliding around on the floor I feel absolutely nothing, on the contrary: The mat remains exactly where it should be and is also large enough to "flexible" roll back and forth to the office chair to. Also mentioned in the previous reviews unpleasant odor I could not find and I'm actually quite sensitive, for that matter. I was able to lay the goods out of the box into the study and here it perfectly meets their purpose.