Stillman & Birn Beta Softcover Sketchbook, Heavyweight 180lb, Cold-Press, White, 28 Sheets - 3.5X5.5 Contains 28 sheets of extra heavy-weight 180lb archival paper The paper is white and has a cold-press surface Suitable for all dry media as well as light washes-wet media-watercolor ph neutral as well as lignin and chlorine free Flexible yet rugged soft-bound cover with sewn bindings