We offer different flow rates to keep up with your growing baby. Every baby is different but as a guide we suggest slow flow for 0+months, medium flow for 3+ months and fast flow for 6+ months. Closer to Nature teats are only compatible with Closer to Nature bottles.Made from high-quality, soft silicone, these teats are designed to replicate the natural feel of the breast. The soft, flexible material ensures a comfortable and familiar feeding experience, making it easier for your baby to transition between breastfeeding and bottle feeding. Equipped with an anti-colic system, these teats are designed to minimize air intake during feeding. The advanced ventilation system helps to reduce the risk of colic and discomfort, allowing your baby to feed more comfortably. Constructed from BPA-free silicone, these teats are free from harmful chemicals, ensuring that they are safe for your baby and meet high safety standards. The smooth surface of the teats makes them simple to clean, and they can be safely sterilized to ensure optimal hygiene. This ease of cleaning helps to maintain the health and safety of your baby's feeding routine. The high-quality silicone construction ensures that the teats are durable and resistant to wear and tear, providing long-lasting use and reliability