"We bought this costume because our son loves the book "Good Night, Gorilla" so we thought it would be cute to dress him up as his favorite character. The costume was ADORABLE and it was perfect for trick or treating in the snow (ugh!) - he stayed toasty warm all night. If we lived anywhere other than New England, it might have been a bit TOO warm. It was well-made, comfortable, and he was the hit of the neighborhood! He is 24 lbs and 33 inches, and the 1T-2T size JUST fit him - a larger 18-month-old would need the next size up."