Sword Art Online Kirito's Sword Backpack Inspired by the light novel and anime series Sword Art Online , it's the Sword Art Online Kirito with Swords Black Backpack! This slick looking backpack features a silhouette of the beta tester and main character in the series with his swords crossed to make it look like they are resting on his back. The SAO logo is featured on the bottom compartment in English and Japanese lettering. Measures about 16 1/2-inches tall x 14-inches wide. Ages 15 and up.