The Playtex Baby VentAire Anti-Colic and Anti-Reflux Baby Bottles are designed to provide newborns with a feeding experience similar to breastfeeding. The bottles are made from BPA-free plastic and have an angled design to prevent colic and reflux. The bottles come in a set and are suitable for use from 0 months old. The nipples are designed to mimic the shape and feel of a mother's breast, making it easier for babies to transition from breastfeeding to bottle-feeding. The bottles are clear in color and feature a venting system to reduce colic-causing bubbles.