Pros:
Love the material and quality of this nightgown.
Love the snaps and the fact you don't have to pull the nightgown over the baby's head.

Con:
Only major con is that they are not long enough.  I bought the 3-6 month size and my baby girl has almost outgrown it because of the length, and she is only 4 months old!  She is only 13 pounds and about 23 inches long, so this should not be the case.  These are way too expensive to only last her a month.