Looks like a corded fabric. You might want to visit a fabric shop. Some heavy materials for drapery look like that. Maybe something in polyester or silk would work.
If you want to try, but can't find the 3M stuff locally, I can send you a small sample of the white and gray (I think the gray will be too abrasive). Last time I shipped something USPS, it took a few days or more. PM me, if you have the time and want to try it. I got my pads at a tooling distributor J&L, now MSC. That is why I mention Norton as a possible alternative. The pads are about 7 mm thick.
John