Sip, Savor, and Transition! 🍼✨ Crafted from high-quality, BPA-free materials for peace of mind. Dishwasher safe for hassle-free maintenance. Innovative straw with gravity ball ensures easy sipping in any position. Fits a variety of Philips Avent bottle sizes (2oz, 4oz, 9oz, 11oz). Easily convert your Philips Avent bottles into sippy cups for seamless feeding. 100% Safe Material 360° Sucking Baby Transition Sippy Cup The Sippy Cup Soft Spout Conversion Kit for Philips Avent Natural Baby Bottles is designed to facilitate your baby's transition from bottle to cup. Made from 100% safe, BPA-free materials, this kit includes two conversion spouts that fit various bottle sizes, ensuring a smooth and enjoyable feeding experience. With a unique 360° sucking design, your little one can sip comfortably in any position, making mealtime a breeze.