Bailing out at high speeds

[Kupsised]

Back to the video...

In the test seat (the one on rails), what is that sheet they're pulling over their faces to trigger the seat? Was that ever included in any production seats does anyone know?

It could be just for the test rig I suppose, to eliminate the need for hat and goggles, but it seems a bit of a weird way of doing things if that's what it is. Surely a hat would be more practical.