Derwent Black Book, A3, Landscape, 16.54 x 11.69 Inches Sheet Size, Hard Covers, Wirebound, 40 Black Sheets (2300381) Hard cover book fits easily into your book bag or backpack Heavy weight black paper will take a minimum of 10 layers of pencil before the surface deteriorates Paper accepts Metallic, Color soft and Intense pencils; color really pops 200gsm (135#) acid free black paper; 16.54W x 11.69H Inch Sheet Size 40 sheets per book