we made sure every inch would be functional when we designed our polly medium backpack. for starters, it has a roomy interior with large zipper and slide pockets for organization. we even added a front and back pocket to the exterior (perfect for throwing in your lipsticks and loose change). and since you'll be carrying this around all day every day, we made the straps adjustable for a comfortable fit. the luxe pebbled leather and enamel spade are really pretty, too.