Camper Covers

I have a cab over 4wd and a camper van and both take the same size covers.

In the past I have used various brands and types, including the silver single layer covers and the softer multi layer fabric style covers. All supposedly UV stable but in reality they are far from that.

One of the multilayer types rotted in only 3 months and the others generally get to about 12 months old before they have to be replaced. I have little option to store my gear out in the open, hence the covers to keep them protected - less worried about waterproofing but UV stability (real rather than just stated) is a definite requirement.

So I am looking for recommendations for covers that will not fail due to UV breakdown in less than a year - I need covers that will fit 4.5m long camper vans, so only 2/3 the height of similar sized caravans.

Thanks

Garry