What are all you mommies'/future mommies thoughts about using waist trainers after giving birth? I'm…

What are all you mommies'/future mommies thoughts about using waist trainers after giving birth? I'm thinking about using one after because I heard it helps your stomach go back down but I don't know much about them. Do they actually work ? How do you know which ones are good for you/which ones aren't? If you have info. On the matter please comment because I just don't know 😩😭