I had damaged the board with the chair, very practical product and quite bulky for an office chair

Used on parquet. For the area covered and moved by the office chair, the dimensions are ok. Stable, it does not move when the chair changes position. However, it is thin, the thickness is not 1 to 2 mm and it bends easily, hence the 3 stars.

I got it because the floorboards in front of my desk were worn out, it adequately covers the area where I want to have the chair and it's quite pleasing to the eye, good build quality, I would recommend it

Much lower than my expectations - in the end, you pay for size, not material quality or fit. I believe it does protect the floor, but I would use it for something static like a bookshelf, not under a chair.

(+) discreet and beautiful,
does the job it is intended for

(-) folds easily if it encounters resistance.
I would prefer it to be more stable on a flat surface.

Quite transparent so that the floor is visible, but not so much that it doesn't look like there is one, so you should take it into account from an aesthetic point of view. Quite thick, it doesn't crease easily but if it does crease, it breaks, so it requires some care at the corners and edges. To avoid any issues, I secured it with small pieces of clear double-sided tape and everything is OK