Hi Norman,
I have 2 different makes, both have their faults. On the Roadster I have an Auto Pyjama which is a heavy cotton, like a dust sheet, brilliant except it is too big for a domestic washing machine. It has to go to the cleaners. On the 6 I have a Classic Additions light weight brushed nylon slightly elastic cover, this fits in the washing machine which is a good job as it seems to spend most of its time on the garage floor. It is so light it slides over the paintwork too easily and needs two people to put it on. I did talk to Classic Additions at Goodwood last year and they did offer an alternative and some discount but I haven’t taken them up on this yet.
Philippe