No, the Zero.Zero™ bottle is a multi-innovation bottle that was designed for newborns to reduce colic and support seamless transitions from breast to bottle for combo-fed babies. Because the patented internal silicone bag contracts as the baby sucks (just like the mammary glands), it provides a natural, colic-free feeding experience for any baby, regardless of whether they are starting with breast milk or formula.

It is designed especially for newborns as a baby's first bottle, but it can be introduced to baby anytime from 0M+.

Unlike traditional vented bottles, the Zero.Zero™ bottle features a patented, anti-colic silicone bag that contracts as the baby sucks. This prevents air bubbles from forming and being swallowed, which significantly reduces gas, reflux, and colic discomfort without the need for external air vents that can introduce air into the milk.

The Zero.Zero™ bottle is specifically engineered for seamless transitions between breast and bottle by replicating the mother’s breast in shape, texture, shade and function. The adaptable flow (A) silicone nipple and the internal anti-colic bag system mimic the natural function of the mammary glands in breastfeeding, allowing babies to move seamlessly between the breast and the bottle without rejecting either.

All of our Small 6oz Zero.Zero™ bottles come standard with the unique adaptable flow nipple (A). This special nipple flow releases more or less milk based on how hard the baby sucks. This mimics the natural breastfeeding experience and lets baby feed at their own pace.

All of our Small 6oz Zero.Zero™ bottles come standard with our Adaptable Flow (A) nipple, which allows milk to flow based entirely on the strength of your baby's suck. This is generally best for newborns, preemies, and breastfed babies. However, depending on your baby's unique suction and your own natural let-down, this can sometimes still feel too slow. If you notice your baby struggling to finish a bottle or drinking too quickly, it is worth experimenting with our other flow options. OurSlow Flow (S) is perfect for those first few days orif Adaptable Flow (A) feels too slow for your newborn. OurMedium Flow (M) is recommended for babies 3M+ as they grow and their appetite increases. Our Dense Flow (F) is ideal for 6M+, babies with very strong suction, or breastfed babies who are used to a faster, more immediate let-down.