These are great cotton bodysuits. The fabric is a little thin for cold season. I just put a layer of onesie under this at night when it's cold. We love the zipper instead of the snap-ins. They are just to difficult when the baby just wants to roll over and does not have the patience to stay calm through the process. And specially during the night diaper changes are so quick.
Our daughter is 6 months and I make her wear the 6-9 month size and it fits her well. She was born tiny and is just 15 pounds. I am guessing it will be good for her for at another month and a half. The colors are nice and calm, we don't realy look too bold and dark colors for the baby. this looks just perfect for the price.