Our 5 year old was obsessed with being Bowser last Halloween. We found 2 child size options and chose this one as the other was a body suit and we thought it would be difficult for him to put on and take off to go to the bathroom on costume day at school. The shell worked great on this one, but I would say it wouldn't be durable since it's inflatable. It could be adjusted with elastic straps. The headdress was ridiculous. It has great details, it looks like a Bowser, but it's really reallyโฆ