Loved by illustrators, calligraphers, and art enthusiasts, the paper in the Zeta Series is hearty, smooth, and perfect for rich watercolors, vibrant markers, unique fountain pens, and more! • 3.5 x 5.5 Inches  or 8.9 x 14.0 Centimeters • 26 Sheets – 52 Pages • Extra Heavyweight: 270 gsm • Shade: White • Surface: Smooth • Media: Dry & Wet Media, Watercolor, Ink Fits the Original Size 2.0 wallets or is great as a stand alone sketchbook.