Nuby No-Spill Grip N' Sip Step 1

One piece built-in valve. Promotes oral development (Dr. Grace Yum, a certified pediatric dentist, recommends soft silicone spouts and straws to help protect children's teeth. www.yummydental.com). Number 1 cup brand worldwide. Touch-flo valve. BPA free. Step 1: trainer cup. www.nuby.com. Made in China to Luv n' Care specifications.

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