It is a Cervellati lightweight pad. The gun lost over 3 ounces when I replaced a 1 inch Pachmayr pad with the 1 1/2 inch Cervellati. I am 6'4" so all my guns get pads and the big silvers pads weigh almost half a pound, that is why I tried the lightweight.
It was a little harder to fit, and luckily I was refinishing the stock or I don't know that I could have ground it well enough without sanding it and the stock at the same time. The side profile has a different texture to it, almost like the inside of a nerf ball, although much more dense. It would be a good candidate for leather covering, but that might negate the weight saving?
CHAZ