You guys, if you don’t have one, you need it... especially for that postpartum engorgement period. This is 2 oz just from my non-nursing boob during one nursing session. It’s nuts. I already have a freezer stash going 4 days postpartum without any extra effort. I wasn’t sure I would even use it, but when I noticed the leaking at let down I decided to give it a try. I wish I did this with my first!