We bought this mattress in March 2006. After 6 months the mattriess was sagging in the spots where I sleep and my husband sleeps. Since you can not turn this mattress over, all we can do is turn around every 2 weeks. The pillow top is the most uncomfortable thing I have ever slept on. I will never buy this mattress again. For the price I paid for this mattress, I was very disappointed. You would think that when you pay $500 for a mattress, it would last a little longer. We need to buy a new mattress. The last mattress I had lasted 15 years. This one lasted 2 years.