Originally Posted by slowandsteady
The springs don't do much in my opinion. The leather itself has a springy quality to it. And what others have said is true regarding how limiting those springs are for finding a good fiting saddle bag. I would go with the B17. They are very comfy.
I disagree. I have five different Brooks saddles and the Champion Flyer on my wife's Raleigh is the most comfortable for both of us.

The B18 on her Fuji is very comfortable. but it requires an upright riding position.