This is a swaddle that can be used from newborns. It was very useful for wrapping up my baby during the cold winter months. The size is 50-80. It has a hood and foot openings, and can be easily fastened in the middle. The fastening part is slightly twisted. I used it from last winter to spring, and then washed and stored it. Although it was used for a short period and a few times, I have had it for a few years, so please purchase with your understanding.