The NUK Orthodontic bottle offers a special nipple that is designed to match the shape of baby's mouth, claiming to "stimulate a natural sucking pattern and aid in healthy teeth formation." This nipple definitely has a "top" and "bottom" but once in place, baby seemed to keep it there comfortably. Overall we like the design of this bottle with clearly marked measures that go up to 5 oz., which we like for when baby needs just a little more per feeding.
Likes
We felt the NUK nipple offered a good latch and can believe their claim that it would promote better teeth formation. It did cause this bottle to score a little lower in our "Ease of Use" test because you have to make sure the nipple is positioned properly in baby's mouth.
Cute designs with clear markings that go up to 5 oz.
Easy to clean with no extra parts/valves.
Dislikes
The nipple did collapse at times, but in our case, we didn't notice it effecting baby. Also, using this bottle in the dark might prove tricky as you must have the nipple "up" for milk to flow.
The NUK leaks really bad if tipped or inverted during travel. The plastic travel cap also has two small slits in the sides (why???) that the milk comes out of when you turn it back up-right.
The travel cap does not "touch" the nipple hole when in place, and this allowed for a lot of leakage while out and about. It does come with a disk you could use in travel but it's an extra step we're not always interested in taking.
Conclusion
A cute, durable bottle with a comfy latch for baby. Keep it upright in your baby's mouth, and during travel in your diaper bag, and you should be pretty happy.
