Do you know what the advantage of a sofa bed mattress is? It really is a very obvious double benefit. If you buy a sofa bed mattress you will be buying two pieces of furniture in one. You will have a sofa to comfortably sit on and when it is time for you to go to sleep or put a guest to sleep. You will be all set because all you have to do is fold the sofa out and you have a bed ready-made. Just think you can save a lot of money by not buying a sofa and bed separately but buy the two pieces of furniture in one. You will save a lot of money. You will save space because you will put the sofa bed in one area of your home or apartment.