I bought this for my baby when she was almost 2 months and it was HUGE (she was/is in the 80-90% as far as growth goes). It was too big for her to wear for the trip I bought it for BUT she wore it all winter. Once she was big enough to fit in it - she wore it multiple times a week. Thick enough to keep her warm in but not too much so she over heats or makes her feel confined. I love that the hands and feet are protected without having to fuss with gloves or booties. Will keep this for any other little ones we have.