The plastic on the wings (at least) seems to be different than the other versions of this mold I have. It's softer, like a hard vinyl, though I could be wrong. Maybe it's just the matte finish, but it definitely seems like a softer polymer, and not brittle in the least. The finish is great. Like some of the later uses of the mold, including the Walmart Skywarp, pieces didn't seem to fit as well as previous versions. Not so here. Mine is great and fits together terrifically. I think they have made a good effort to prevent breakage issues, but only time will tell, I suppose. I don't feel worried about transforming this one at all. That said, this is my 4th of this mold, and I've never had so much as a stress mark on any of them. i'll take some better photos later when I experiment with the lighting.