Nuby Non drip nipple with handles only in pastel colors,Madewith Polypropylene plastic. As a baby gains hand and arm strength, he or she begins to grip the bottle they are fed from. With the addition of handles at this stage, it is easier for the baby to hold the bottle on his or her own. Since babies also begin to teethe at this stage, the nipple can be switched to a Non-Drip™ Co-Injected Nipple. These special Nûby nipples provide hard and soft surfaces - ideal for feeding and teething!