Im a huge fan of the Karen Neuburger brand.  I have several sleepwear items of hers, and I love them.  This set is very soft and comfortable.  The fit is excellent.  It has plenty of wiggle room but is not baggy.  The material is lightweight but not see through, and the quality is excellent.
The elastic waistband is comfortable with plenty of stretch.  You can actually sleep comfortably in these pajamas.
The buttons and button holes are very good, and the buttons stay on.  No loose buttons.
I machine wash and dry, and they still look great after multiple washing.  Overall, some very nice pajamas.