The pro pad was installed inside the seat. I don't have a photo. There is an illustration on
www.alligatorbob.com at the top left hand corner when you click on propad. It is not a very good illustration though.
When they installed the pad. They peeled back the cover, removed some foam, replaced it with the pro-pad, put on a thin layer of material to hold the pad in place, put some more foam on top, and then replaced the outer vinyl. If feels pretty good. I notice it most when I first get on the bike.
I think maybe they explain the process on the website too. I only wish I'd had him put in on the whole seat and not just the driver seat because I lean into the back of the pillion.
Hope this helps.
B