I am a second time nursing mom and when my milk comes it it can be quite the ordeal. I have an overactive milk letdown and that can make a mess. I don't just need breast pads I need real obsorbancy. I have had to go as far as to use disposable or cloth diapers around the breast I'm not nursing on when I let down my milk. So reusable nursing pads will often soak through very quickly. These pads are thick and contoured so they stay in place best of all they really hold the leaks before soaking the other side. I have posted a video of them in action soaking up 20ml of water it soaked up all that water and never wet the other side. I can say this time around my clothes will be well protected. These are the best breast pads I have ever known for heavy wetters.