Crawler from About 10 Months. Unique snack base. Slides shut when not in use. Snaps together for convenience! Snack Base snaps on for on the go use and is perfect for use with: Snacks; Pacifiers. Angled neck designed to aid in drinking. Lock-in valve ensures that once the valve is in, it won't fall out. Wide lid and narrow neck is designed for little hands to hold.