Nreal Air Top Half cover

Source files included (Created with Fusion 360 - all history / features steps are present)

The design is not perfect, but should be ~99% there.
Although the glasses are curved, it is meant be fine printed flat and once snapped on, it should kind of bend and stay in place...

You could potentially heat up the print to make it soft and try to shape it and then cool it, to put it more in a permanent slightly bent shape, but I think it probably is not necessary.