Use: The Philips Avent Natural Response teat delivers milk only when the baby actively drinks, allowing them to suck, swallow, and breathe at a natural pace, similar to breastfeeding. This facilitates an easy combination of breastfeeding and bottle feeding. The wide, soft, and flexible teat mimics the shape of the breast, ensuring a natural latch and comfortable feeding. The baby's sucking movements are as close to natural as possible, and the ultra-soft material of the teat helps it stay in a natural position in the baby's mouth. Specially designed ''petals'' help maintain the teat's shape and ensure a continuous flow of milk. Milk does not release from the teat without the baby's active sucking. How to take: When choosing a teat, it is important to consider the baby's individual drinking rhythm. It is recommended to choose a teat with an appropriate flow rate and, if necessary, switch between teats as the baby grows and develops. If the baby chokes on milk or it leaks from their mouth, it is worth trying a slower flow teat. If the baby plays with the teat or shows dissatisfaction, a faster flow teat may be needed. Natural series teats are exclusively compatible with Philips Avent Natural series bottles. Contraindications: The integrated anti-colic valve prevents air from entering the baby's tummy during feeding, thereby reducing the risk of colic and discomfort. The teat is also protected against milk leakage, which helps avoid spills. All teats are made of silicone and are BPA-free.