This hardcover sketchbook features 25 sheets of high performance, pH neutral, lignin- and chloride-free paper. Ideal for urban sketchers, artists, students and professionals, the extra heavyweight 180 lb. (270 gsm) paper has a white cold-press surface, and is suitable all dry media and ink. With both internal and surface sizing, it will accept light washes, wet media and watercolor as well.Details: Gray hardcover, white sheetsA4 size- 8.25" x 11.75"(21cm x 29.7cm)180 lb./270 gsm25 sheetspH neutral, lignin- and chloride-free paperCold press surfaceDurable design is resistant to warpageBound in the USACover is made with extra heavyweight binders' board