The folks that are hoping to make the live action video series about Gordon Freeman have posted some information on how they made the HEV suit. Quite timely for Halloween if you ask me, though you’d have to really bust your butt to get it done. Apparently most of it is actually a soft foam, at least softer than it looks on film.
here’s the video of them talking about the construction
But if you really like this, you might want to consider supporting their indiegogo campaign to make the video series The Freeman Chronicles. . Here’s the trailer: