This backpack is designed for commuters and urban dwellers who want to take a bag with them. This backpack has 15-20 Liter of expandable storage. General features are reflective inserts, rain cover, expandable, iPad pocket, 5 internal pockets, a pen holder, fidlock closure and pockets for G1 and G2 back protector. The D-Exchage Backpack holds all your stuff securely and comfortably.