The Nûby™ Non-Drip™ bottles have a variety of colorful designs that are bright and modern to make feeding even more fun. They come with the patented variable flow Non-Drip™ Nipple that features anti-colic valves to reduce the risk of colic and teething nubs to massage baby’s gums. The nipple is easy to use and prevents spills and leaks. No drips! No Spills! No mess! All smiles!