Delta is an extra heavy-weight ivory paper with a cold-press surface that is suitable for all dry media and ink, as well as watercolor. The flexible, yet rugged covers have soft-bound sewn bindings and rounded edges to prevent fraying. The paper contains both internal and surface sizing, is pH neutral, lignin and chloride-free, and 270 gsm thick.
Each book contains 26 sheets. By Stillman & Birn.