The paper also has internal and surface sizing, allowing it to accept light washes as well. Stillman & Birn Delta Series Hardbound Sketchbook, 5.5 x 8.5, 270 gsm (Extra Heavyweight), Ivory Paper, Cold Press Surface 150gsm Smooth Paper For Ink And Dry Media Stillman & Birn Softcover Sketchbooks - Alpha, Beta, Gamma, Delta Epsilon Softcover Sketchbook 5.5x8.5 Pro The Epilson series is a premium mixed media sketchbook with a softcover. Each book contains 92 pages of 150 GSM, heavyweight, smooth white paper for use... White, heavy weight 150gsm paper has a smooth surface that is suitable for pen & ink, and dry media. Hardcover Epsilon Series Sketchbooks | Stillman and Birn Stillman & Birn Epsilon softcover sketchbooks are flexible, yet strong with sewn bindings and are finished with rounded corners to prevent the edges from fraying.
