The seller has 2 models. He doesn't mention it in the ad. The one pictured above is the sport model and is slightly firmer then his cruiser model which has more padding. As I dug for more info from him, I was convinced that the sport model was the one for me because of the trimmer design. I measured the seat for you, it's 10" wide and 8" long.

P.S. If you bid or buy, just specify that you want a Sport Model if that's what your looking for.