I have one as my primary cover. The bike is outdoors and after 4 months of daily on and off, it's still in one piece and doing a fine job. I had one on the ST1300A for 2 years and it was still protecting the bike when I sold it.
I've seen a zippered version of the bike cover and that interests me as getting the cover on in the rain or winds can be - interesting.
I've seen a zippered version of the bike cover and that interests me as getting the cover on in the rain or winds can be - interesting.