White Ibis Watercolor Books from Holbein are produced to the exacting standards set by Holbein's 120 years of experience in developing fine art papers. Each spiral bound book or tape bound pad contains 12 sheets of white, exceptional-quality, 140 lb (300 gsm) neutral pH paper crafted from a unique cotton blend that ensures predictable and reliable results every time. - Holbein White Ibis Watercolor Book - 9" x 6-1/4", Spiral BoundWhite Ibis wc Books, 7 X 9 SPIRAL -