Gamma is a heavy-weight paper with an ivory medium grain surface that is suitable for all dry media and ink, as well as light washes. 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 150 gsm. thick.
Each book contains 50 sheets. By Stillman & Birn.