I bought this for my 2010 f800ST and have been totally happy with the bag. Aside from fun trips, I use my BMW for commuting and errands and the bag fits a TON of stuff. My laptop fits perfectly and there is plenty of space for other items. The expandable top it a great feature, as is the small pocket on the top of the case.
It is also very easy to detatch and carry, which is great when I arrive at work or bring in groceries.
This bag has exceeded my expectations.Rating: [5 of 5 Stars!]