The Ortlieb Commuter Daypack City is the ideal backpack for commuters. With a volume of 21 liters you can take all you need for a day at the office. The Commuter Daypack City is made of light, durable nylon fabric. With the roll-closure you don't need to worry about taking electronic devices when it's raining. This bag has a large main compartment and a softly cushioned compartment. It's very comfortable because of the back padding with ventilation channels, which makes the Commuter Daypack City a great choice for the daily ride to work.