I don't have the one which can carry all that crap in front. It is very lightly padded but with the contoured straps it does not slide off.
I need to go to their factory and check it out.
If you see one locally, buy it and don't think about it. They sell really quickly. Try Adorama also
2000 740i-Annalisa and 2008 335i-Weebl. Weebl may wobble but has DTC