Tempur-pedic refuses to uphold their warranty for these defective sheets. I paid over $160 for these sheets and they are 2' too wide for the mattress. I had just bought a $5000 mattress from them and these sheets, which per their chart were ideal. The fitted sheet clumps on the bed due to too much width of material and are impossible to sleep on due to discomfort. They also look horrible with the too-large baggy fabric. The flat sheets are also 2' too wide and will lay on the floor if you have a platform frame rahter than a high bed. Tempur-pedic is criminal for charging me for these defective sheets they refuse to allow me to return under warranty. After reading the reviews, it is clear others have had the same problem.