Mammut says about the Xeron Courier 25
This backpack combines great features for everyday life and traveling with the modern look of a courier backpack. Its large rolltop lock allows fast, unrestricted access to the main compartment and gives it a distinctive look. The laptop compartment can be accessed conveniently at any time using a separate zipper and is protected with fleece. The 25-liter version is reinforced with an additional back plate for optimum balance and strength.