Tim Holtz Alcohol Ink Hardcore Art Panels are a versatile substrate for fine art and mixed media techniques using Tim Holtz Alcohol Inks, Alcohol Pearls, Mixatives and Blending Solution. Hardcore Art Panels are double-sided vinyl with an Engineered-Wood-Rigid-Core MDF board offering an ideal surface that remains rigid and flat. Ready to use bright white, lightly textured surface. This package includes three rectangle pieces measuring 4x6, 5x7, and 8x10 inches.