Yeah man, from the description:
“This works to gently push back ventral (abdominal) hernia into place while strengthening the entire wall itself.”
“It will also work toward making the support muscles a little bit stronger and more effective. (by inducing a micro workout)”
Strengthens your wall which will help keep your organs in place and prevent a gut especially after eating I believe
The vacuum is the pose the bodybuilder in my profile pic is executing, that exercise is deemed to make your waist smaller by strengthening your transverse Abdomen