Borden And Riley #310 Optimum Drawing Sketch Pad, Top Spiral, 11" x 14", 90 lb. , 35 Micro-Perfed White Sheets, features 90 lb. heavyweight paper with superb tooth and smooth finish for a variety of renderings. It is recommended for charcoal, pastel, pencil, pen And ink, markers, light watercolor washes. Excellent erasability. Acid-Free. Made in USA. .