Any more details on that thing?
Cant fold in half,protection if you lean against something?
Overall lenght of a pv you can put in?
Well the PV I put in it and it fits perfectly is my Black Provari with extended end cap for 18650's with the Stainless Steel Dual COil MAP Tank and a Cherry Vapes Stainless Steel Ming Drip Tip. It fits like it was designed around that device. As far as exact lengths and such I am not sure really, I don't have anything to really measure it with to a science.
Now for protection I have to say that since it is a Padded and Molded case it is good and rigid and does not bend much at all. I am sure you could bend it but you would actually have to use a fair degree of force to do it. The padding on the outside also protects again any counter catastrophes too

I found that out today when I hip checked my kitchen counter at home with the case with the provari in it

No damage at all. Didn't even offset the MAP Tank.
Hope tis helps Martinc
Nate aka Darth Vapor