We ordered two of these for our kids. I had done some research to see if these were Memory Foam by using some key words from the description. My findings were inconclusive. I ordered them anyway. THEY ARE NOT memory foam or at least not like my tempur-pedic, but they are of good quality high density foam and perfect for kids. They arrived within four or five days. We are very happy with the purchase but wanted to save folks who are wondering if they are memory foam some time from doing research.