The Sheets fit my King Size Tempur-Pedic mattresses perfectly, and I mean perfectly!!! They are very soft but unfortunately, they are a little thin. The top sheet is too small. It needs to be wider as it only hangs off each side about 4 in. When you climb in and cover up, it barely covers you. It also needs to be longer, as I can barely tuck it in at the foot of the bed. Other than that, I do love them. If they can fix the thickness, and the size of the top sheet, I will purchase again.