I honestly didn’t care too much for it and ended up only using it a few times. For me it was easier to just use my electric pump, if I leaked, it wasn’t much and wasn’t worth attaching it to me for. For me it was awkward juggling that, baby, and my toddler. BUT everyone is different. I might have liked it more with my first, because I leaked a lot and didn’t have a toddler running around.
I didn’t produce to save my life, but it’s supposed to be the most amazing must-have. It’s not expensive at all. Definitely worth to have on hand. I ended up gifting mine since it wasn’t ever used.