One black canvas panel, 8 x 8 in, triple-primed 100% cotton on a rigid hardboard backing, ready for acrylic and oil. Canvas Panel: One black canvas panel, 8 x 8 in, with a triple-primed 100% cotton surface on a rigid hardboard backing. For Painting And Art: Canvas is great for acrylic and oil painting, art class projects, studies, and finished display pieces. Triple-Primed Cotton: The 100% cotton has a medium-grain weave and a triple-primed gesso finish, ready for acrylic and oil paint. Rigid Hardboard Backing: The hardboard backing keeps the panel flat for easel and table work, and it frames or props for display.