I purchased this Hat to use it with the Bundleme also by JJ Cole since they are made from the same material. When I opened the box and took it out, it looked HUGE! Since my baby is only 2 months old, I thought this will not fit until he is like 5 months old! How wrong I was! It looks big on the outside, but the opening for the head is actually on the small side. I had difficulty using this hat with my baby who is only 2 months old because he kept complaining and almost crying when having this on his head as iif it was too tight. I had to use brute strength to stretch it out a bit and then he was a bit happier, but not much. It feels very warm which is a plus since you will obviously use it on winter, and so far it has worked well for my baby. My only complaint, as I stated before, would be the size of the opening for the head, quite small and the reason for the three stars. Apart from that, the item is good quality and seems durable.