Stillman & Birn Alpha Wirebound Sketchbook, Heavyweight 100lb, Natural White, 50 Sheets, 10X7 Black Contain 50 sheets of heavy-weight 100lb archival paper The paper is natural white in shade and has a vellum surface Noticeable tooth it is suitable for use with all dry media and light washes ph neutral as well as lignin and chlorine free covers made of extra heavy weight binders board