Haakaa pump! I use this all the time. And it’s how I’ve built my milk stash while exclusively breast feeding. I keep it on the breast that I’m not nursing from to collect the milk. It kind of just naturally syphons it out. It’s been so helpful also to alleviate engorgement when needed, especially when he started sleeping longer stretches! The best little $13 invention. LTKfamily LTKbump LTKbaby