These sheets are a bit pricey, however we absolutely love them. The quality is amazing, youd think because they are thicker sheets youd get hot but its just the opposite, they stay cooland so do you. They do slide up a touch, not enough for me to complain over. We have a thick mattress along with a 4 topper, they definitely do not slide up above the top of the two. We will not go back to anything other than Egyptian sheets!