Engineered to make drinking and handling easier, designed with two people in mind, the No-Spill 360 Wonder Cup is perfect for beginners. Your little one will find the transition from bottle to cup an easy one with the cup's rim that can be sipped from all sides. You will be delighted with the transition thanks to Nuby's valveless, leak-resistant design. The soft silicone rim insert 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 silicone seals, ensuring a leak-resistant cup.