Dust cover for my dust cover?

I know the title sounds dumb but I just purchased a basically brand new condition Pioneer PL-90 vintage turntable. Even the acrylic dust cover is like brand new. I'm trying to keep it that way. I want to keep dust from ever getting on the acrylic. I know I could just throw a microfiber towel over it or something when I'm not using it but I would like something that looks a little more professional. What would be the kindest material to come in contact with the acrylic without leaving any scratches whatsoever? Would love to buy a pre-made rectangular cover that fits but this thing is huge. Approximately 24 in by 17 in by 8. So far I can't find anything pre-made even close to this 24-in length. Ideas? Thanks