I have not tried vectran...never heard of it, wouldn't know where to get it. Are you "stationed" in the USA? What I use is called Teklon, but it's still dacron. So I have a sneaking suspicion...no hard evidence, mind you...that Vectran is just a proprietary "brand name" for dacron--as Teklon is. As for the wrinkling...it is my opinion that it is flanky leather--taken from the margins of a hide. Something that ought, in my opinion, have been discarded or used for heel pads.