It is the high sissy bar. The seat is the Gel Thruxton seat - I really like it, my wife has no complaints but to be honest she only rides for 1/2 to 1 hour trips.
The bags are by Leatherlyke:
http://www.leatherlyke.com/
They require the sissy bar or grab rail as they use the bolts that those accesories come with. When the bags are off (there are 2 clips per bag that attaches to posts inside the bag) all that is left is the black bar between the mounting bolts and the posts themselves. It only takes 5-10 seconds per bag to get them off - you do have to unlock the bag first. I got the contemporary bags and in my opinion they fit in perfect with the classic style of the bike. They are rated for 20lbs each. I have only been in some moderate rain showers since I have had the bike, but they have been 100% waterproof in those cases. You can select bags and mounts that are specifically for a Bonneville!
By the way, I have since also added the Reno tail bag by T-Bags:
http://www.t-bags.com/Detail.aspx?ID=82&selectedcat=9
Fit is perfect (really perfect) for the high sissy bar.