Got a 30 year old Hollywood Motor Car Co. (?) car cover, still looks great don't know if they are still in business or not but it has worked well. Inside storage. Cotton material.
Had two Calif. Car Co. covers on other cars, and they that weren't that great. They fall apart when you wash them, made out of a matl. that looks like a Bounty paper towel. I didn't like them.
Go to the Salvation Army store and buy some blankets for just a few bucks, toss them on the car and fugetaboutit.
Also look up a post by Marco on this,,,, a CCC cover boogered up his Roadster top if I recall correctly. Been some time since I read that.