Guys I just returned from a long weekend where I used the Geigerrig quite a bit. I used it in my tankbag and made a small insulating pocket for it. It held the water cold all day.
Here is the bare bladder
The material is called reflectix and available in most Lowe's
bladder in the pocket
Top made to go over the pocket
Cut a corner off so the hoses could get outside of the pocket
sitting in my wolfman rainier tankbag
here are the exposed pieces. It is very usable while riding down the road.
I will still carry it on my bike when DS riding but when touring I plan to use it in the tank bag so I do not have to carry it all day.
Just an FYI