Zeta is a unique, heavyweight multi-media paper with a smooth drawing surface. The paper's smooth texture and minimal tooth provide exceptional line control for pen and ink work, but Zeta will also accept a full range of dry media from graphite to pastel. Furthermore, because Zeta has both internal and surface sizing (like all Stillman & Birn papers), it will support multiple washes with wet media as well. Color intensity is remarkably vivid because of the paper's high opacity, and because its unique sizing forces pigments to stay elevated on the surface. Zeta is a natural line extension of the light 100lb Epsilon, which also has a smoother surface.