I purchased a Serta Perfect sleeper the mattress after two months it is sagging on both sides. I wake up every morning with all my muscles screaming in pain from trying not to roll out of bed every night. My husband fell off the edge of the bed the other night. I have called American Mattress in Avon In and their toll free number to no avail. I have called Serta all I get is a recording. I have emailed Serta no response. One thing I want everyone to know is that Serta Mattress Co. does not care about their customer’s have a good night sleep no wonder the gave away little Serta sheep so you have something to count when you can’t sleep.