I got these from this company, 6 bottles in total with the cap on top, when we were drinking the anti-reflux. The nipples worked for us with these milks, even though sometimes it would choke... now it doesn't work for us anymore, the baby (boy) is 11.5 months old and after 8 months he drinks regular milk... he drinks water from a straw and a cup with a straw, and yet this continues to choke him, resulting in me starting and stopping or many times annoying the child... I haven't gone above nipple 3... not to mention it makes a mess for the baby because it spills... additionally, these are difficult to wash without the cap underneath and the glass ones (they hold milk at the bottom)... out of frustration, I threw them away and kept two of the six glass ones...

With another company's nipple that flows when the baby sucks, but is not recommended for anti-reflux (maybe it clogs), it's perfectly fine and I have nipple 4 and it needs more...

Wonderful design!! The sweetest thing ever!! Comparable to dr brown (although those are visually boring). Very convenient this specific size (170), you can use it from newborn to 4 months.

We use 6 different brands of baby bottles in our daily life. After one month, I can confidently say that this is our favorite!