Rigid 14-ply white illustration board accepts all techniquesï¿½brush, pen, sponge, spatter and airbrush. Excellent for ink, poster paints and acrylics. With 50% rag content surface (on one side). Collegiate/Regular finish has a slight texture is a great multi-purpose art board. Art Board Type: Illustration; Material(s): 50% Rag Content Surface On 1 Side; Color(s): White; Assortment: N/A.