Looks to me like it might be a combo of fat and loose skin. I have the same thing going on but it is improving with diet and exercise. Don't underestimate what fitness will do for you. I would be looking much saggier if I didn't work out. When I improve as much as possible with diet and exercise, I am going to check into maybe getting Thermage done or using a Dermaroller to stimulate collagen and elastin renewal. I have only non-surgical options since I can't do surgery but these are non-invasive. The results I have seen from both are pretty nice. You might look at something like that if it really bothers you.

My tummy is a cross between Baker's and Sontaikle's except for pregnancy stretch marks added to it (they are different from gaining weight stretch marks because of the shape of the baby bump).

And of course there is some fat attached to it because skin has fat layers - it doesn't mean this is possible to diet away.

The worst is when you lean over - it hangs there - much more noticeably than when upright.

You may gain initially a few pounds when you up your calories to maintenance or just above, but you will lose that again. It is necessary to up them in order to gain any muscle though, so don't be discouraged by it. This is what I am reading and what I plan to do when I get to within 10# of goal or so. Maybe 5. And I am talking heavy weights, not wimpy little weights.