So a friend of mine whose opinions on things I sometimes question, purchased a set of these. I thought about it a bit and was hesitant due to the price but decided to give them a try. I already have a set of Boll and Branch sheets that I like with the exception of them feeling extremely cold when I get in bed. The sheex are just the opposite. Last night was the first night using them. Very warm and they don't slip and move. They have a deep enough pleat to fit a sleep number mattress with a pillow-top. For once my friend was right.