The First Years Grown Up Trainer Cup with Magical Color Change is a big hit with moms and kids! This trainer cup allows your child to get rid of spilling from an open cup. It is easy to clean, dishwasher safe and BPA free. Kids will enjoy watching the color magically change when poured with cold beverage and returns to its color when reaches room temperature. The lid is just like mom or dad's on-the-go coffee cups!