These sheets (and pillow cases) have exceeded my very picky expectations. I have used them daily and washed them weekly for several months with no piling or sign of wear. You can really feel the quality of the 600 thread, mercerized Pima cotton. They're soft, smooth and a comfortable weight. They are nearly wrinkle free if taken immediately out of the dryer. Also they are deep enough to fit my 19" matress + 2" pad. I spent a lot of time trying to find the perfect sheets and feel I hit the jackpot with these. I sure couldn't find better at twice the price. As always the order processing and shipping through Overstock was great.