As your child develops, their needs change. That's why we have developed an extensive line of products that change with your child. At birth your baby begins with a nipple because nipples require the least amount of suction. When they are strong enough and can produce enough suction (usually around 6 months) your baby can progress to drinking from a spout. Once they have become accustomed to drinking from a spout, they are ready for a straw (usually between 9 and 12 months, depending on the type of straw).  Because most of our nipples, spouts and straws are made from the same soft and durable silicone, your child will find each new stage similar to the previous. This familiarity makes the transition easier. Please note that the months you find on our packaging and on our website are only suggestions. Every child develops at their own pace. If your baby does not appear to be ready to make the transition, it's OK. Keep encouraging them, but don't force it.