Do you mean the ones that go on the outside? If not then ignore this or read FYI only.
We have had windshield covers since we have owned the MH. They were made for us by a mobile service. Rather expensive. But they work reducing the heat substantially , and you can see through them. We had them made for side and rear windows as well. They have been exposed for three months a year to the desert sun and are still in excellent shape ten years later.
That being said this winter we know a couple that purchased some decorative shade material at Lowes and sewed their own. Cost about $35. bucks. They used an elastic material centered to stretch the ends at each end of the windshied where they had sewn in a dowel for ridgidty on the ends. A clip at the end of the elastic hooked into their driver and passenger side windows some how.
Very decorative, a variety of colors and inexpensive and beat the heat. Not a bad combo.
I saw some of the material at Lowes yesterday in the garden section. It is wide enough to cover a windshield without sewing pieces together so you are just hemming or having someone hem it for you.
If I had it to do over that is what I would do.
I do all my own stunts
03 Dolphin LX 6355, Workhorse W22, 8.1 vortec, 04 CR-V, Blue Ox, Brake Pro----Norm, Barb and
Doc(He's a PhD)