Nûby’s Insulated Clik-it™ range of cups offers leak proof technology that you can see and hear so moms and dads won’t have to worry about spills and leaks! The No-Spill™ Insulated Cool Sipper™ keeps liquids fresh and cool and helps protect furniture from a “sweating” cup. Engineered to make feeding and handling easier. You will be delighted with the transition thanks to Nûby's valveless, leak resistant design. The soft silicone spout is uniquely designed to prevent drips and spills while being delicate and gentle to 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.