JoJo Siwa Backpack for Girls - 16" JoJo Siwa Backpack, Stickers, More | JoJo Siwa Backpack Set. This JoJo Siwa backpack bundle includes one 16" backpack with adjustable shoulder straps, side pockets, and top loop for hanging featuring colorful artwork of JoJo Siwa. ThisJoJo Siwa backpack is sure to be a hit with JoJo Siwa fans of all ages and is great to give as a gift to anybody who loves JoJo Siwa. This JoJo Siwa backpack is perfect to carry notebooks, binders, snacks, and any other school supplies you need to school or anywhere else. Officially licensed JoJo Siwa backpack is perfect for JoJo Siwa fans of all ages, kids and teens alike. This JoJo Siwa backpack set also includes unicorn stickers and a unicorn bookmark.