After breastfeeding for just over a year, my baby would not take the bottle when I introduced it at such a late stage. She copied us drinking out of straws - at first found this cup tricky, so I simply let her practice with normal straws for about a week until she got the hang of it. Then I put a straw in the vital baby cup; once she was comfortable with that, I simply switched to the cup straw and that was it. I can comfortably leave her to help herself to a drink whenever she wants now. The cup does leak a little, but its hardly anything worth worrying about. The cup is so easy to take apart and clean, and is also quite sturdy at the same time, so I have a feeling it will last a very long time. The only negative I would say, is that when there is not much fluid left in the cup, baby may need assistance getting the drink out if the cup is being tilted slightly; ie when out and about in the buggy etc. But I still give it 5 stars because that is not a fault of the product, it is simply the fact that that is to be expected with a straw!