It is a pretty comfortable and supportive mattress.  I wake up with less back pain than I did with my old mattress.  However, it has absolutely no edge support whatsoever, despite what the description says.  If you try to sit on the edge of this bed, you’re gonna end up on the floor.  I can squish the corners flat with my hands and I’m not very strong.  I’ve been using it for a month now so it’s definitely all the way “inflated”.  If you can afford a better mattress, don’t get this one, otherwise, it’s ok enough.