Nightmare Before Christmas Backpack Set - Bundle with 16" Jack Skellington Backpack, Water Bottle, Stickers, and More | Nightmare Before Christmas Backpack for Kids. This Nightmare Before Christmas backpack set includes a 16” backpack with adjustable shoulder straps, zip closure compartment, and top loop for hanging featuring colorful artwork of Jack Skellington, Zero, Sally, Oogie Boogie, and more. This Nightmare Before Christmas backpack for kids contains plenty of room to carry school supplies, your water bottle, and any other small items you need to take to school or on the go. Show off your love of Jack Skellington in style. This Nightmare Before Christmas backpack bundle also includes a Beach Kids water bottle and Nightmare Before Christmas stickers, making the perfect gift set for any Nightmare Before Christmas or Jack Skellington fan. Officially licensed Nightmare Before Christmas backpack set is perfect for fans of all ages, boys and girls, alike. Set also includes a bonus Beach Kids bat door hanger.