To use this Christmas tree costume, simply put on the bodysuit and then the hat. It's super easy for your kids to wear and will make them the star of the Christmas party. When it comes to safety, always keep an eye on kids under 3 as the small parts can pose a choking risk. Also, make sure it stays away from any open flames. For maintenance, since it's dry - clean only, take it to a professional dry - cleaner. This way, you can keep the costume looking great for many Christmases to come.