How overweight do you have to be to have the skin flaps after weight loss?

Anonymous
Like this:
thesweatybetties.com/.../Loose-Skin.jpg

How overweight do you have to be for that to happen after weight loss?

Is it possible to get that if you just go from upper range of healthy to lower range of healthy?
How overweight do you have to be to have the skin flaps after weight loss?
2 Opinion