These ultra stylish backpacks by Room It Up are made of Polyester. The Junior size measures 12" x 16". With plenty of storage for all of your stuff and a front exterior zip pocket, this is the perfect backpack for school or play. Backpacks feature a padded back panel & adjustable shoulder straps. The NEW Confetti Dot Junior size backpack was designed to hold a full size notebook. Just the right size for the young school age kids.