The general thinking is that these arms are like the Chris Redfield/Dutch /Hulk arms.
There's an internal skeleton used for articulation, with rubber moulded on top in the shape of the chainmail.
It will bend like Hulk's arms. There's no telling how cool it will look when fully bent of course. Only time will tell with that.
So these arms may very possibly degrade over time too? I've been avoiding rubber bodies for this reason..