From the Shrek Costume Collection. Shrek Gingerbread Man Kids Costume. This is an officially licensed Shrek costume. Costume includes a jumpsuit and character mask. Made of 100% polyester. According to the manufacturer, removing of wrinkles is very easy. The first way is to remove the costume from the bag as far enough in advance from when you want to wear it, unfold and fluff the costume, and just let it hang on a hanger.