Learn natural lip movements and step up correctly. This mug allows straw practice with two different drinking methods. The mug parts are interchangeable, allowing a smooth transition from straw practice to straw drinking and then to cup drinking. ●Product Information● Product Name: Try Straw Lesson Mug SD Target Age: From around 5 months old Size: 11.5 x 7.5 x 12H (cm) Maximum Capacity: 200mL Materials: Polypropylene, Silicone Rubber Dishwasher Safe Boiling/Chemical Sterilization OK