The cutting of the mat could be a little cleaner, especially the edges are very sharp. Really bad I do not think that, but it would be nicer if the edges were slightly rounded (because of the danger of cuts). Much more bothers me that the mat is not nearly as "highly transparent", as the picture suggests. The surface is roughened, which can be seen in side light not much from the underlying soil.
Otherwise, I am satisfied so far, a long-term test is still out.
