The Nûby™ First Training Cup helps little ones learn to leave the bottle behind and take those first steps towards drinking like a big kid! Made of 100% silicone, it's gentle on gums and teeth while also being safe to use with warm or cold drinks. The cup features an Easy Grip design made for little hands. Thanks to the steady flow created by the cup's angle and the Free-Flow Spout, your little one's sips are more natural, easy and safe.