When I ordered these sheets, I did not see where it said they were cotton sateen. I am overall a hater of cotton sateen sheets. However, with that said, these sheets have changed my mind. I noticed in other reviews that it said their sheets had pilled after washing. Mine have not. I have washed these sheets several time. My front loading dryer has removed quite a bit of lint from them, but they still remain uber soft and un-pilled. The sheets fit comfortably around my mattress with a little extra pocket space (height) to spare. I will buy these again. I am very pleased with them.