Rainbow High Backpack Set for Kids, Girls - Bundle with Rainbow High 11 Inch Backpack with Unicorn Stickers and More (Girls Backpack Elementary School). This Rainbow High backpack set includes one 11 inch backpack featuring favorite Rainbow High characters with adjustable shoulder straps and top loop for hanging. Great to use in a school supplies set, this mini backpack is the perfect size for your little one to take to school! This Rainbow High backpack can also double as a travel bag, gift bag, and more! This Rainbow High backpack set also includes bonus Shopkins unicorn stickers and princess door hanger. Officially licensed Rainbow High backpack for girls measures 9 in x 3 in x 11 in when full.