NWT Disney Nightmare Before Christmas Jack & Sally Rucksack 。NWT Disney Nightmare Before Christmas Jack & Sally Rucksack Backpack Now & Forever. Product details: Just like Jack and Sally, you and this backpack from The Nightmare Before Christmas were meant to be. It features a slouch style with Jack\'s bow on the flap, Sally\'s patchwork pattern detailing on the front, and outlined drawings of Jack and Sally on the sides. Includes padded back & straps, laptop pocket, side pockets and classic drawstring closure with snaps on flap for extra security. Backpack measures 18\" x 13\" x 6.5\"