You can't have a true Jack Sparrow costume without Jack's “effects,” so this Halloween, be sure to get these Captain Jack Sparrow adult boot covers for your authentic Pirates of the Caribbean Halloween costume. Made of 100% polyester, these brown boot covers have an authentic, distressed leather look and measure 13” long and 4 ½ “ wide. These officially licensed boot covers are the perfect finishing touch to any pirate costume, and not just a Jack Sparrow costume.