Bristol board, is an uncoated machine made paper, said to be named after the city of Bristol UK. The surface of Bristol Board, is smooth, making this a favourite with colour pencil artists and illustrators. If you require a little more tooth, when working with multiple layers then Vellum, Canson Mi Teintes, Tiziano, Lana, Hotpress Watercolour or Pastelmat would be the paper of choice.