Harley Davidson SAC luggage bag. This is the big size that can go on a luggage rack on the tour pak or on the back seat so you can use it as a backrest.
Used on only one trip, worked very well. GREAT condition. Has tie down points for strapping, protected pockets with velcro, and hold a lot of stuff for those long distance trips.
$75 shipped. Paypal preferred. Might consider trades for interesting electronics, tools, etc.
My camera is acting funny, so grabbed an online image. This is the same bag. If my bag isn't in better condition than this image and you want to send it back, I'll refund your purchase price when it gets back here safely. Fair enough?