I am on my third Adco cover. The first one was the grey one and it lasted three months short of the 2 year warranty. They sent me another one but it did not come with a warranty. Apparently you only get to exchange it once. It lasted one and one half years. I am now using the designer one. It seems a little better but it is only six months old. I live on the California coast and get some sun depending on the weather. But it only gets up to 70 here and it still didn't last two years. I think its better that the cover deteriorates then the trailer in my opinion.