They work. But you have to strain your neck to monitor your milking speed.
I'm an over producer. These are great to have so i didnt have to carry my big medela pump every where. I have no trouble with the suction and it draws my milk just fine.. i fill these easily.<br />My absolute biggest complaint is that these are frosted silicone with a small window...... I always watch my milk come out whether im automatically pumping our using these two manual pumps. I cannot see my milk dripping and the speed.. i have to lean forward a bunch just to see. Its a small issue but extremely annoying. I'd definitely find a product that suits this need next time lol
Rating: 3 stars