This is my first post so be kind. I made this costume to wear at work this past Halloween (I won first place). I couldn't make it TOO bulky (had to still be able to work), hence this "streamlined" version. I made it out of closed cell polyethylene (blue camp mats), hot glued it together , painted it and added other components. Paint doesn't stick too well to polyethylene unless someone out there knows of a type of paint that does. Anyway, I'm thinking of trying to tackle a Mark IV made of the same material. Wish I could find red and gold camp mats so that I wouldn't have to worry about the paint rubing off. We'll see....