Pastelboard is a sealed hardboard panel with an archival granulated marble dust finish that holds and grabs many more layers of pastel than traditional pastel papers and is fine enough for even the most delicate skin textures. Acid-free, non-yellowing. Unmatched techniques, subtle and soft blending, smooth pastel transitions, works both wet and dry and accepts oils, acrylics, watercolors and more. Convenient and strong Pastelboard fits into standard painting boxes and is its own drawing board. Will not bend or buckle even under heavy pressure and surface manipulation.