The parts you can see out of the printable area are not necessary to build the suit.
Let me explain!
When the designers are creating the suit on 3D using the software and they render it, there are some parts that could be duplicate it automatically or need to be removed.
Instead of make everything again, the designers just put those parts out of the printable area in order to avoid users use them.
So, don't worry. Those parts out of the printable area are there for one reason, not by mistake. So, forget about them!