I don't remember exact brand but I got a velcro closure one off amazon for about 30 that I got to fit for right after birth and safety pinned it all the way down folded over for when I needed a size smaller I wouldn't use anything that has a panty type part to it just one that goes from ur hips to under ur boobs
I'm planning to get the wink post pregnancy compression girdle. It has great reviews and is on Amazon.com. It's a little spendy, but it is the only one I have found with such great reviews for working and being comfortable.
Corsets shift your organs I would recommend you do your research on them before putting one after giving birth. Your body may need time to get back to normal before using a corset. I recommend panty spanx.