Canson Artist Series Field Drawing Book for Pencil, Pen and Felt Tip Pens, Side Wire Bound, 90 Pound, 9 x 12 Inch, 60 Sheets Wonderful for pencil, pen, and felt tipped pens Durable enough for erasing Special surface sizing so fine tipped pens will draw fine crisp lines and not feather Two-sided: fine texture and medium texture 60 9 x 12 inch 90 pound/147 gram sheets