The mattress pad cover that I purchased does not fit. It comes off constantly. I continue to use it because I want to protect my mattress. I read many reviews warning of this issue. I assumed it must have been a faulty cover as a company like Tempurpedic would not sell an inferior product. Some reviews make it sound like the cover may have been improved. I am preparing to donate my cover as I am frustrated with having to make the bed over and over.