Droolicious

I used these bottles and did not like them at all. The way you put the milk in is not the most practical and my son didn't like them.  I really like the concept but for us they did not work at all.

We also tried one of these bottles. I didn't have problems with how the milk was put in, but however it was that I stored them (I don't remember if I stored with the twist down or with the cap on and the nipple down), it leaked like crazy. If I remember correctly, they are not supposed to be used in sterilizers and you have to warm the milk before putting it in the bottle, unless you want a mess. But, most importantly, my son didn't take to it at all.

Agree with the comments above.  Although my daughter eventually took milk from these bottles (mostly due to my persistence as I wasn't about to waste the investment) I was constantly irritated by how leaky they were - mostly out of the nipple.  You had to be really quick getting the nipple into baby's mouth, which wasn't always easy for me, let alone well-meaning dads and babysitters.  Appreciate where the designers were going with it, but aside from looking like a boob, they don't really work like one.

These bottles are a pain! Constantly leaking, a nightmare to fill, and once the baby's teeth come in, the nipples don't last long. Since there is no separate nipple, that means you have to replace the ENTIRE bottle. At nearly $15 a pop.... no thanks! Avent, Dr. Browns, and BornFree are much much better!!