"This costume is super cute. I purchased this for my 3 year old and a Stay Puft Marshmellow man for my 5 year old. Obviously we were going for the whole "Ghostbusters" theme. My problem with this costume is that is backpack leaked air. We had to have a replacement sent and it leaked as well. It was also HUGE! They sell this costume for adults also, and I guarantee the backpack is not sized down...so it is super big for a small child. Too big for them to wear for long."