Here she is back in her bag. It fits nicely and if I had my old bag style harness it would fit in there easily too. There is no way my Aeros Myth 2 Harness will fit with its rigid back plate. I might see if I can pick up a cheap bag style harness somewhere locally....

Here is my Aeros harness and the Perfex side by side, the perfex packs up to just under 2M in the Bag so quite suitable for checkin desks and cable cars, that's why I bought it!