My 'new' jk one...pah! all the silver coatings coming off where it creases... Only got it in Dec last year.
Bought my breathable cover from Karman Konnection Southend three years ago (made in usa) will fit a Viking and so far has been very good. The only issue I have had is keeping it on in very high winds the two supplied under straps not enough but by adding ropes around solved this.