I have the Cooler and I use it for a lot of things other than just keeping dinks cold (Warning: NOT watertight, use ice packs or put ice in ziplock bags) . It works great as an over night bag and fits in the left saddle bag nicely. There is still room behind the bag where the tool kit/owners manual goes. I keep a little LED light in that space. Here is a pic of the bag fitting (note: cooler bag was empty in this pic)

cooler.jpg

I needed the left saddlebag on a trip so I strapped the cooler (full of clothes) on to the back rack. This worked out great.

cooler 2.jpg