No one seems to make what I want for this.

I don't want a soft sided case. I _have_ a soft sided case. What I want is a hard walled, padded interior sleeve to go around my laptop when it's in the soft sided case. Something that'll take the load of, say, other carry on bags being piled on top of my bag.

I've always wondered if something like kydex would be stiff enough if made into a holster big enough to fit a laptop. Anyone know if anything like this exists?