Disney The Little Mermaid Backpack with Lunch Box Set - Disney Princess Backpack for Girls Bundle with Ariel Lunch Bag, Stickers, More | Little Mermaid School Supplies. This Disney The Little Mermaid school backpack features adjustable shoulder straps, zip closure compartment, and top loop for hanging featuring colorful artwork of everyone's favorite mermaid, Ariel. The Disney Princess backpack for girls measures approximately 16" x 12" x 5". This durable Ariel backpack for girls also comes with an insulated lunch bag, Tinkerbell stickers, and a princess castle door hanger. This Little Mermaid backpack for school has plenty of space for Disney Princess folders, notebooks, and books. Front accessory pocket is perfect for holding Ariel pencils, pens, school supplies, toys, snacks, and more. Officially licensed Disney The Little Mermaid school backpack school set. Pair this with other Disney Princess school supplies.