The Sippy Cup is baby's first drinking cup with a straw. This spout cup is the only drinking cup with a straw you'll need for children from 6 months to toddlers. The drinking cup is perfect for transitioning from bottle or breastfeeding to a cup and features side markings to help you track how much your baby drinks. With the innovative weighted straw that moves with the liquid, your child can drink while standing, sitting, or lying down, no matter what angle they hold the cup. The unique two-way valve allows for easy drinking without leaks or spills, and the flip-top lid locks in place for on-the-go adventures. The minimal parts ensure easy and more hygienic cleaning. The cup is dishwasher and sterilizer safe.