This is a swaddle blanket that can be used from newborns. It was very useful for wrapping up babies in the cold winter. The size is 50-80. It has a hat and foot covers, and can also be fastened in the middle. The fastening part is a little twisted. I used it last winter to spring, and then washed and stored it. The period of use and the number of times used were few, but I have had it for several years, so please understand this before purchasing.