Engineering Helmet

There is no defense here, only the look. It goes in the social helmet slot, so you wear it over whatever real headgear you are using and give up nothing to do it.

It is a construction hard hat, and it lines up cleanly with the Architect Gizmo Pack if you want a complete builder costume. The Mechanic selling it fits, since she is where every other wiring tool comes from anyway.

The resemblance to the Engineer from Team Fortress 2 is close enough that it is hard to read as coincidence, right down to how it was shown off before the update landed.