Isn't that basically the new Air, minus the ports?
the current macbook air is 1240 gram
the 12" macbook was 920 gram
They're very similar, but handling both together my old 2016 12" is just slightly smaller and lighter in a way that is really appealing compared to my 2020 13" M1 Air. It's 350g lighter, which makes more of a difference than I would have guessed when throwing it in a bag.