Next, 3/4-inch high-density foam is glued and stapled in place to make the forms for the tuck 'n' roll. The lines are transferred over to the foam for lining up the pleats. We used high-strength upholstery glue in a Binks spray gun and staples in this step. This gives you the cushy lovin' on the backrest. Choosing the right foam is everything: don't cheap out on this material or you will hate yourself later. The better quality you use, the longer you will enjoy the ride.