I started using the Drop-ins on recommendation from my friend. I purchased the Premium Nurser set from Target which included both 4oz bottles and 8oz bottles, various nipples for different flow speeds, small package of liners and a breast pump adapter ring for pumping directly into the liner.

My son was mostly breastfed, but took these bottles while I was working part-time. The nipples at "NatraLatch" style, and caused no nipple confusion whatsoever, and I recommend them to breastfeeding mothers. He was very gassy and colicky, so I had piece of mind knowing the air could be squeezed out prior...