The quality of the mattress protector cover is great! However the fit is made for an extra thick mattress apparently. My mattress is 10 yrs old but still in good condition. Why can't temperpedic make a mattress cover to fit my mattress? It fits well till you sleep on it! Then it has wrinkles in it that are difficult to get out because retucking the cover is difficult to do with a memory foam mattress. My old cover fit better and did not have this problem, unfortunately it wore out!