Slip covers. My wife purchased 2 pottery barn comfort sofas several years ago and we have really enjoyed them however when it came time to buy new covers I could never understand why it cost so much to purchase a PB slip cover. Well, I found Comfort Works and they have changed the way I look at buying slip covers. I was able to buy 2 slip covers for less than the price of one PB slip cover. And honestly the quality is just as good if not better. Oh, and the company (Sarah, who remained in contact with me the entire time) really does have great customer service. Great game experience.