Small 6" x 8" panel. I laminated heavy artist's paper onto gessoed masonite panel as a way to stop a pink bleed that was happening through the gesso. I love painting on this surface.....it's much more intimate than straight panel and more sturdy than paper....best of both worlds. I'll see if the infatuation holds, but at the moment it's my favourite surface to paint on. This is the 3rd or 4th on this type of surface.