The NUK Learner Cup easily promotes babys transition from breast or bottle to sippy cup. This Learner Cup features a spill-proof soft spout that is gentle on teeth and gums, and it includes an air vent that helps reduce swallowed air. The cup also comes with easy-to-grip, removable handles that your growing child will love. NUK Learner Cups are BPA free and dishwasher safe. Our 5 oz Learner cups are recommended for ages 6m+.