This Nuby Active Sipeez 360 cup is perfect for little ones. The cup is engineered to make drinking and handling easier and 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. The soft silicone rim is gentle to your baby's gums and emerging teeth. Always read the label. Warning:Allowing your child to use this product for prolonged periods separate from regular mealtimes or to go to sleep while drinking liquids, other than water, from this sippy cup may cause or contribute to early childhood tooth decay. Always use this product with adult supervision.