awesome easy to use well made great product just as described and arrived on time with great quality perfect bottle nipples Baby loves these bottle nipples.
If you want to add a little baby cereal (I recommend oatmeal, not rice) to your baby's night time bottle (not before 4 months of age), then you'll need a different kind of bottle and nipple like the Medela bottles with medium flow nipple.
After purchasing additional AVENT Natural bottles, I purchased the Medium Flow Nipples and Fast Flow Nipples since the AVENT Natural bottles only came with the Slow Flow Nipples.
Does not fit properly in our other Avent collars so milk leaks constantly and we stopped using these completely.
We bought the newborn flow (level 1) for our newborn, but immediately noticed that the flow is a lot faster than expected--he would choke whenever he ate because he just couldn't keep up with it.
Does not fit "Avent Bottles, Natural Feeding, Classic, 4 oz" :( All of my kids have choked on these slow-flow nipples until they're at least 3 months old.
Philips AVENT New Natural medium-flow nipples are designed to help babies feed from both the breast and the bottle. The nipple's wide shape is similar to the shape of a breast, and its soft, rounded nipple encourages the same peristaltic movements used to breastfeed. Twin anti-colic valves keep air in the bottle and out of babies' tummies, making feeding and digesting more comfortable and reducing colic. The nipple is made of soft, durable silicone and has a petal design that prevents it from collapsing while your baby feeds.