I just purchased this bag for air travel so I wouldn't need a backpack and a roller suitcase. The bag itself is great! The design is well though out and has great quality just like any other Osprey pack. The only issue I have is there were no local retailers selling this product so I had to buy online without actually seeing the pack. If I had seen the Castle Grey color in person I would have opted for black; the grey is light green and the pictures online make it seem to be grey. If Osprey offered to exchange for a different color I would exchange it for a black bag. It isn't a bad color but in my opinion Osprey needs to update the color description on the website to something more accurate.