[rustythorn]

Those look really nice, and the soft sided, squeak-free design is pretty attractive. That method of storing gear doesn't attract me personally because I like to think in terms of more modular storage.

For example, if you occasionally stay at a hotel it's nice to have your clothes in a removeable case. That's also convenient at the start and end of a trip. If you have different types of adventures, or different family members use the van, it's also nice to have swappable bags. If you have a field kitchen in a bag this isn't the best way to store it. So, like many things, the use case matters.

why not both, get some travel duffel bags with compartments that hold their shape. make a mounting system that will allow you strap them into the van. here are a few items i found

from amazon

from crashpad

 

[rustythorn]

why not both, get some travel duffel bags with compartments that hold their shape. make a mounting system that will allow you strap them into the van. here are a few items i found

from amazon

from crashpad

looks like someone was faster

 

[rustythorn]

Dunno anything about these bags, but just wanted to point out that not all corrugated plastic is created equal.
Might be useful if considering using the stuff for whatever.
Corrugated Plastic sheets, panels, pads, rolls, Corrugated plastic sheeting, 2mm 3mm 4mm 6mm 8mm 10mm corrugated plastic sheeting, bins, single face corrugated plastic white clear plastic corrugated sheets

and there is corrugated FRP