I bought the Porsche shade as well. Its a hard core (press board?) folded shade with a moderately reflective surface on the front (nice Porsche emblem) and a dark thin cloth edging / backing. Its not bad.....but not perfect.
The shade has cutouts for the mirror assembly and is held in place solely by the sun visors. While its cut to shape for the Macan, the fit is a bit loose and you get a gap top / bottom and both sides. Not big gaps.
What I don't like, is its a bit heavy and unwieldy to get unfolded or refolded in the car. I had a "soft" foam core sunshade for my last car.... and the bit of bending you could do with it really helped manage it inside the car. The reflective material is ok, but still absorbs quite a bit of solar heat and is HOT at the end of the day. Again, previous sun shade only used to get warm, but was made out of a more reflective material.