This sofa arrived in four days! It was very easy to assemble. The color is definately more of a denim blue then a navy blue but I like that. The sofa is very comfortable to sit on. It is a firm sofa which I like. The sofa bed mattress is a foam mattress about 6 inches thick. It is used daily in my house by a 6 foot tall young man who stays with us. He said it was so comfortable. Much better then our old spring mattress sofa bed. This was our first furniture purchase from Wayfair and certainly will not be our last.