Customer Rating: Summary: The only nipples that seems to work with my baby - was full-time breastfeeder 2008-04-21 Comment: Great product! I buy the glass version bottle (born-free) and pair it up with this nipple and my baby will take the bottle - he usually only takes breasts since he was breastfed for 9 months. I've tried other nipples and I only made him more resistant to taking bottles. The nipple definitely made the transition easier. Now at 11 months he is 95% on the bottle. I would recommend this to all moms - even bottle-fed babies who have never breastfed.