Art Alternatives stretched canvas is 8oz cotton duck stretched around kiln dried stretchers and back-stapled. Without side staples, the artist can decorate the edges and hang the object suitably without a frame. The canvas is triple primed with acrylic gesso. Gallery Canvases are 1 1/2" deep and of standard quality. These canvases come in either 4, 6, or 10 packs depending on the size.