They did use soft rubber. What some of you dorks don't realize, is that he is always going to have something on his head AND his neck...you can't move your head like its fully natural. You can't move your head as natural as possible, even in a football helmet, so enough with the damn complaints. It's barely noticeable in the first movies. In fact, I never had an issue or even noticed it until I came here and started reading fanboy gripes about it, back in 2003. I was like, what are they talking about? Bale moved his head plenty while in the BEGINS suit. It really isn't a big deal.