I have for sale a Hill Devices Co-op Expedite Rolling duffle backpack. It is exactly what is called olive in shade. When and has simply a couple scratches on it, I used it. It is excellent for traveling. It features a lots of areas. the back and bottom are both made from hard plastic and it has the great MEC zippers. Best aspect of this is it can be a duffle bag or a rolling bag as it has tires on the bottom and also a telescopic manage ahead. It could also be a knapsack. It is the 90 litre version (medium size) and also retails for $149 at MEC.