I have had this cover for about 6 months and the sunlight is rapidly rotting the material. My RV is in California alongside the house and is exposed to sunlight all day. The material on the top of the RV is so deteriorated that any pulling on the material and it simply tears. The uploaded picture shows one of the holes which has developed. Examination of the ending on the hole shows how badly the fabric is frayed which indicates deterioration of the material. The sides which do not get direct sunlight are fine, but the top is terrible. I doubt that this cover will last a full year of direct sunlight. I also found that the material is fairly porous to sunlight and the trailer roof gets very hot even with the cover on. I took the cover off walking barefoot on top of the trailer and got 1st degree burns on my feet because the roof was so hot. I have now resorted to putting plastic tarps underneath this cover to keep the trailer roof cool. This cover is not worth the money. I like Walmart, but I hate this cover.