The Nightmare Before Christmas Jack Skellington Cosplay Full 。This Loungefly Nightmare Before Christmas Jack Backpack is a mini semi-circle shaped backpack featuring a pink handle/strap, silver hardware accents, and a multicolored exterior. The backpack is designed for women and is perfect for carrying essentials while showcasing the character of Jack from The Nightmare Before Christmas. With an adjustable strap and zip closure, this backpack is a stylish and functional accessory for any Christmas-themed outfit. Made from faux leather with a polyester lining, this Loungefly backpack is a must-have for fans of the beloved Disney movie.