The mattress arrived well packaged, and filled out properly within 24 hours. It's comfortable to lay down on- sturdy enough but with the soft, foam topper. However, the springs come right up to the edge of the mattress, so when you touch the sides of the mattress, you can feel every bump and ridge of the thick springs. Also, the foam top tapers toward the edge, and so it's unsupportive to sit on.
In short, it's comfortable for my child to sleep on, not so much for me to sit and read to my child as he falls asleep.