Nuby Flip It Beaker is a no-spill designed straw. The touch flow straw valve requires a squeeze and suck action to allow the liquid to flow. Nuby Flip It Beaker has a soft sipper straw which is gentle on your child\'s tender gums and emerging teeth and is recommended by a Paediatric Dentist. The soft sipper straw can be covered by an easy-to-use flip top cap. This uniquely designed feature keeps the straw hygienic and clean. Capacity: 300ml/10oz. Dr Grace Yum, a certified paediatric dentist recommends soft silicone spout and straws to help protect children\'s teeth. Key features of Nuby Flip It Beaker: No-spill designed straw Gentle on your child\'s tender gums and emerging teeth Capacity: 300ml/10oz. Designed to keep the straw hygienic and clean