The Nuby 3-Stage Grow Nurser can be used from birth to toddler. This unique feeding system starts as a bottle with the patented variable flow Non-Drip Nipple that features anti-colic valves to reduce the risk of colic and teething nubs to massage babys gums. The nipple is easy to use and prevents spills and leaks. As your baby begins to develop and grow, the easy grip handles are easily attached so they can start to feed themselves. The soft, silicone No-Spill Spout included replaces the nipple as your child begins the transition from bottle feeding to cups. No drips! No spills! No mess! All smiles! Plus, its all BPA Free.