I bought the skirts that go with that kit and I never put them on but the material that they make the parts out of is as described. It is very flexible. I don't know about the fitment but by my measurements the skirts are dead on.
Out of curiousity why did you never put them on ClkE?
Thanks for the quick response by the way, I'm still kind of on the fence, but if the skirts were good then theres a good chance the bumper is too I guess.
I spoke one of the guys from Extreme Dimensions and they were very helpful before and after the order. I dont know if thats their ebay alias or if they are affiliated with the seller in the link, but Email them and see if they have pics of the whole kit installed. I have seen a pic and it looked cool I don't remember where I saw it but they should have a pic on hand. If I come across it I will post it up.
I just never got around to it. I had them cut to my liking (they had extensions that went into the fenders for a wide body look) and then put them in storage because I wasn't gonna put them on until spring. At one point I had actually forgotten about them lol. Then I had them up for sale because I was thinking of doing the Amg skirts instead. I haven't decided yet. after I fix my newest problem (cracked oil pan) and make sure that My engine isn't screwed I will make a decision.