When these sheets arrived, I absolutely loved the look and feel of them-very luxurious. I like heavy sheets and in the summer, I do not require any additional covering. I had them for less than a year when I noticed the bottom sheet and pillow cases had started to pill a little. It was very disappointing because others that I have owned that were only 1200thread count never pilled for the several years that I had them. To be fair - I must say that I hate trying to fold king sized sheets so I take them off every Saturday, wash and dry them and put them back on the bed. I still would not have expected them to pill that way and have never had this happen with any 1000+thread count sheet. I will not be purchasing any more of these and have warned my friends against them when they comment on how luxurious they feel. I tell them that only the top sheet will feel that way after a while.