LEAK RESISTANT - This cup has a special touch-flo spout that only releases liquid when sucking is present. Otherwise, don’t worry about it!EASY GRIP - It’s in the name! The grippers are perfectly designed for little hands to hold and to prevent drops, spills, and accidents.EASY TO CLEAN - Wash prior to initial use and after subsequent uses. Clean with warm, soapy water. Rinse and dry thoroughly. Also safe for top rack of dishwasher.TRANSITIONAL - The move from bottle to cup doesn’t have to be difficult. In fact, this cup combines certain elements of a bottle with a sippy cup to provide a comfortable change.BPA-FREE - To help bring a little piece of mind all Nuby feeding equipment is 100% BPA-Free! Your little one will find the transition from bottle to cup an easy one with the soft silicone spout and unique contour that easily fits their small hands. You will be delighted with the transition thanks to Nuby's valveless, leak resistant design. The soft silicone spout is designed to prevent spills while being gentle on baby’s gums and emerging teeth. The pressure sensitive Touch-Flo feature regulates fluid intake with sucking action of child. When sucking action ceases, the spout closes, ensuring a leak resistant cup.