We received our Serta CA King mattress cover hoping it would make our extra bed not so "cement" hard. It was wonderful. The only disappointing feature was that there were large dirt streaks on it that had to be gently sponged out. Since the product is obviously machine rolled to get it into the box it arrived in, there was NO WAY we could roll it up and return it. It would have been like wrestling with Jaba the Hut.