Stillman & Birn, Zeta Series Wirebound Sketchbooks, Various Sizes Watercolor Mediums Caran d'Ache color cores are

Caran d'Ache color cores are glued over the full pencil length and all sides for greater break-resistance

Recommended for adult craftsmen or with adult supervision for inexperienced users

Jet Black and Titanium White

or bleed-through on most papers

Stillman & Birn, Zeta Series Wirebound Sketchbooks, Various Sizes Watercolor Mediums Caran d'Ache color cores areThe Zeta Series is a unique surface. It has the feel of a dense Bristol paper but is in fact an extra heavyweight (270 gsm) mixed media paper with an ultra smooth finish. Loved by illustrators, calligraphers, as well as watercolorists, the the Zeta Series is perfect for a wide range of media, from colored pencils, wet media, markers, fountain pens, and more. Extra Heavyweight: 270 gsm Shade: White Surface: Smooth Media: Dry & Wet Media, Watercolor,