I used this for several months from the newborn period. There is some wear and tear, but I think it can still be worn cutely. During the sleeping phase, it's a dress-all, and when the baby becomes active, it's a 2-way type that can be buttoned at the feet to make it like pants. It's 50-70cm, so I think it can be worn for a relatively long time. The fabric is neither thick nor thin, and it was perfect for my daughter, who was born in winter, to wear indoors. If you have any questions, feel free to comment!