i have an evolution 4 car cover. it is very high quality and last a long long time. it has been sitting in it's storage bag in my garage for a many years now since it is a pain in the ass to use and everytime you use it, you transfer dirt to the inside of your car when you store it, and then transfer it back onto your car the next time you put it on. the cover is too big to fit inside a laundry machine or drying machine, and so is too hard to wash, and even harder to find a place to hang it out to dry.