Use of a "RoofBag" To Transport Crash Pads?

Anyone use a "RoofBag" or similar soft-sided cartop carrier to transport crash pads on climbing trips?  https://www.amazon.com/RoofBag-Waterproof-Made-Year-Warranty/dp/B0042H6BA0?th=1

I drive an old Subaru Outback, and often sleep in it on trips. I have a system that works for sport climbing trips, but the addition of pads for bouldering trips makes the car interior start to get really crowded when packed for a 1 week trip for 2 people. Looking for better crash-pad transport options. Pads to be transported would be an Organic Big Pad and two Simple Pads. Thinking if I could get two of the pads (whatever combination works) on the roof, and the other in the car, that would help the space issues.

I don't want to get anything bulky and hard-sided (like a hard-sided cartop cartop carrier or a hitch mount) that I'd either have to leave on the car or find somewhere to store in my city apartment.   Also not interested in just strapping pads to the roof without protection from weather. These soft-sided roof bags look appealing in theory, since they protect the cargo from weather but fold up when not in use. 

Any testimonials, suggestions, etc?

On film sets we use Bag-Its! brand plastic bags to cover our carts/lights overnight. When those aren’t avail, plastic mattress bags from Home Depot. Both have worked for me for a few road trips. Easy to dry, fold, store.

Also curious about this one - similar situation but even smaller car. A single pad eats up a lot of interior space, been curious if the soft sided bags work well but haven’t been able to find much reliable information 

I have used a roof bag full of crashpads for multiple cross country trips on top of our van. I cant find the exact brand online but we fit a BD mondo and an organic (don't know the model off of the top of my head but the ‘generic’ size) in there. Every kind of weather you can imagine from every corner of the country, no issues. It was great because it folded up if it wasn't in use. Would recommend.

Noodle Dude wrote:

I have used a roof bag full of crashpads for multiple cross country trips on top of our van. I cant find the exact brand online but we fit a BD mondo and an organic (don't know the model off of the top of my head but the ‘generic’ size) in there. Every kind of weather you can imagine from every corner of the country, no issues. It was great because it folded up if it wasn't in use. Would recommend.

Awesome, thanks. Any issues when driving at highway speeds (noise, etc)?

This sounds like it should be a promising solution.

No noise other than flapping material, it took a couple trial runs to figure out the perfect 'loading' so that it wouldn't get flappy. Gas mileage dropped a couple MPG but not anything horrendous or especially noticeable. I also changed the tie-downs to be more secure to my roof rack. the model I used was the 18 cu ft one:

  amazon.com/gp/product/B0012…;psc=1