Key Features: Stage 1: SoftFlex™ Non-Drip™ Nipple Equipped with a pressure-sensitive valve, this nipple ensures fluid flows only during active sucking, preventing leaks and spills. Its built-in anti-colic air system reduces air ingestion, helping to minimize colic symptoms. Additionally, raised teething nubs gently massage your baby's gums, aiding in teething discomfort. ​ Walmart.com +4 TotalHill +4 Directions for Me +4 Walmart.com Stage 2: SoftFlex™ No-Spill™ Spout As your baby grows, transition to the soft silicone spout, which maintains the Vari-Flo™ valve feature, allowing your child to control the flow rate. This design supports an easy shift from bottle to cup, promoting independent drinking skills. ​ parentsfavorite.com +11 Walmart.com +11 Nuby +11 Stage 3: Removable Easy Grip™ Handles Detachable handles are ergonomically designed for little hands, encouraging self-feeding and enhancing motor skill development. ​ Walmart.com +7 Directions for Me +7 Brookshire's +7 Additional Highlights: BPA-Free and Durable: Made from break-resistant plastic, ensuring safety and longevity. ​ Giant Food Stores +1 TotalHill +1 Graduated Measurements: Clear markings in both ounces and milliliters for precise feeding. ​ Giant Food Stores +2 TotalHill +2 Directions for Me +2 Easy Maintenance: All components are top-rack dishwasher safe, boilable, and compatible with microwave steam sterilizers for convenient cleaning. ​ Directions for Me +1 Giant Food Stores +1 The Nuby 3 Stage Grow Nurser & Feeding System offers a seamless feeding experience, adapting to your child's needs while ensuring comfort and ease for both baby and parent.