Introducing the altura urban dryline briefcase 15 this 15 litre briefcasepannier bag is ideal for commuting this briefcase has the features that will make your life a little easier and a little more organised first of all the brief case is constructed from alturas patented dryline material this is sure to keep the rain out inside the main compartment you will find a padded laptop or tablet bag which can hold up to a screen size of 15 the laptop bag can be removed from the briefcase and