The Flip-it Cup by Nûby features a soft silicone straw which is gentle to your child's tender gums and emerging teeth. The soft silicone straw is covered by an easy-to-use flip top cap. This uniquely designed feature protects the straw and keeps it sanitary and clean when not in use. Great for travel and short trips! When ready to use the cup, simply flip the cap and sip from the No-Spill straw. Liquids pass through straw only when your child sips. The leak resistant cup dispenses a variety of liquids, ranging in consistency from fruit juices to milk and water.