BOT cups use an innovative straw technology so your child can sip to the very last drop. Its integrated lid is easy to open and close, and eliminates the problem of lost parts. The cup is BPA and phthalate-free, and the straw is made from food-grade silicone with a weighted steel ball. Designed for children 9 months and up. Handle, lid and base: Polypropylene. Dishwasher safe.