Soft Doors for E4

I’m looking for a Set of soft doors for my E-4. The ones I’m looking for are solid canvas with clear zip down windows. These are the ones With Out the frames. They simply button to the side of the GEM and you use a zipper to open and close the doors? Any ideas where I could get some to these.

We bought a get that had a set of these doors. They came with the car and I have no Idea where they came from, but they are awesome. Yes zipping in and out is kind of a pain but what I like about them is there is no moving parts becids the zippers and they do not rattle like other doors with frames and strikers do.

Thanks in advance