The Comotomo Silicone Replacement Baby Bottle Nipples in slow flow are designed for newborns and infants aged 0-3 months. Made of silicone, these soft nipples are suitable from 0 to 3 months and provide a slow flow rate to mimic a natural breastfeeding experience. The Comotomo brand is known for its realistic design and high-quality materials, making these nipples a reliable choice for parents looking to transition their baby from breastfeeding to bottle feeding.