These bottles were great, especially with the breast pump, it made things a lot easier for me.

The one problem I did run into was that the nipples tended to be a bit large for a newborn's mouth and quite a different shape then an actual nipple, so it did interfere with nursing.

I would recommend them, they are a terrific item, but maybe not so ideal for nursing moms who want to keep nursing as the primary feeding method. Nipple confusion?