NUK Blue Junior CupNUK Blue Junior Cup with Chameleon Effect changes its colour! And the way your child drinks too. This is fun! There is now something that makes drinking even more fun! The NUK Junior Cup with Chameleon Effect excites children because the motif on the cup changes when warmed or cooled. You can hardly believe it! Your little ones won't want to let one out of their hands. Whether in the bathtub, or while drinking tea or having a game with ice cubes