The Ortlieb Velocity 17L backpack stands out for its quality and strength. Some of the Velocity’s distinctive features include its durability, waterproof performance and rear padding that ensures excellent ventilation With a 17-liter payload, Velocity’s little brother has all of the features of the big brother, only in a somewhat smaller size and a volume reduction of 6 liters. The backpack’s interior has also been given a new design. In addition to the large zippered inside pocket, both Velocity models now have a padded laptop compartment. The Velocity’s carriage system has now been ergonomically optimized for even greater carrying comfort. The waist belt is easy to adjust and even detachable. You can also attach a rear light or a bicycle helmet to the strip with clip on the back.