We really liked the look of these sheets online and when they arrived they seemed just fine. However, within about 6-8 weeks of use, they had begun to pill-up and get rough at the center and, with additional use, the pilling has only spread. We've had them about 4 1/2 months now, and they can't be used any longer. They are just too uncomfortable to sleep on. We've ALWAYS purchased 100% cotton sheets from dept. stores and all the others have lasted for years, even those which were less expensive. We've never had this problem before. I think they must be very poor quality. Do yourself a favor and skip this purchase.