Weighted straw moves with the liquid, whatever angle the cup is held Simple flip top lid Dishwasher safe Sippy cup base is microwave safe. Do not microwave sippy cup lid and straw Made from PP and silicone, steel weighted ball Dimensions (cup with lid) 15 x 12 x 7.5cm 240mls/8oz capacity BPA, Phthalates and PVC free Our award-winning sippy cup features a Stitch inspired weighted straw that adapts to any angle, preventing leaks with a two-way valve, even with warm liquids. The ideal transition from bottle/breastfeeding to cup it supports independent drinking, allowing tots to drink to the last drop. 2-way valve to ensure no leaks. Newly designed valve also makes it safe for warm liquids. Unique pull tab makes for easy cleaning. With easy-grip handles and a flip-top lid, it's perfect for home or on the go.