Stillman & Birn Zeta Series Sketchbooks contain extra heavy-weight, 180lb. archival paper in either hardbound or wirebound format. The paper is natural white in shade and has a smooth surface. The sketchbooks feature enhanced wet strength ideal for multi-media artwork. The paper is sized internally and on the surface for added strength.
See the chart below from Stillman & Birn to find the sketchbook that is best for you!
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