The Thule Crossover 15 Liter Messenger Bag is a sleek, low profile bag that comfortably wraps around your body, minimizing the bulk of a traditional messenger bag. A removable laptop sleeve adds an added layer of protection for your 15 in. MacBook or PC. Weather resistant materials and SafeZone compartment keep your gear dry and protected from the elements. The Security friendly laptop compartment fits up to a 15 in. MacBook Pro or PC and is designed in compliance with TSA guidelines so your laptop does not need to be removed when passing through airport security. Simply unzip laptop compartment and lay on airport conveyor.