The Billabong Mahalo Hula Backpack is a 28L midsize backpack. The backpack features two main compartment pockets. The large back compartment has a laptop sleeve and a large area ideal for books and a lunch box. The front compartment features a stationary organiser, and is large enough t o fit a pencil case and wallet inside. The front compartment also features a small horizontal zip, perfect for small, essential items. This bag size is perfect for both teenagers and juniors.