The vinyl is "Ottertex", and it is sold in a few places. I got mine from fabricwholesaledirect.com. It is 54" wide and sold by the running yard. I bought three running yards because it was so inexpensive - it was only $9.99 a running yard.
To ship it, they folded over and over into a square. When I got it, I immediately unpacked it. The folds and creases were visible even after I spread it out on a floor. Then, I rolled it up onto and existing roll of foam material that I bought previously. This was a few days ago.
Yesterday, when I unrolled it from the foam, the fold lines were still visible. So, before gluing it to the foam, I used a steamer to relax the vinyl in those areas. It helped, but they were still visible. I was concerned that they would be visible after gluing. I was glad to see and very relieved that they disappeared when I glued it to the foam.
Hi res photo:
I think I am going to switch to this vinyl for the A-pillars and windshield header because it looks more like the original than the vinyl I bought previously.