I received these to replace other cases I have used. My main concern is that my faux leather (ie vinyl) seats get very hot in the summer. Yes, they are very cold in winter. These fit a lot better than the others. You look 100% better. They don't seem to protect from the cold that much (I haven't had them long enough to try to keep warm in winter), but I'm perfectly happy with them. Sometimes they slip a little but they lower easily so the elastic is back under the seat. The roll that goes between the top and bottom seat works pretty well, it hasn't happened in my other cases.