If you have a VS, the tonneau material used to be the same as the soft top material. Nice, thick and heavy. I have a 2013 as well...
i personally love mine. It’s on virtually year round- keeps sun out in summer, and heat in when it’s cold ;-)
as suggested above, try calling Gregg @Vintage Motorcars Inc @VSpyder since he works with the SoCal craftsman and local suppliers that used to make the covers/ tops for VS. side note- I only wish his shop was closer to Seattle, my dealings with his shop have been 5star.
And do have a local shop install the snaps on the cover locally with your car on site... to custom fit to cover to your car.
i could take a better pic if desired... this is the only one I had on my cell.