The 90 lb (190 gsm), natural white paper feels both solid and flexible, with a fine grain that allows pencils and pens to slide effortlessly across the surface. Delicate hatchings allow for every kind of work — from architectural sketches to quick drawings. The acid-free, archival paper is suitable for all dry media and light washes. This sketch book features a thread-stitched binding and flat sheets that allow for drawing across the fold. Their linen-like anthracite covers make these sketch books as pleasant to hold as they are to use.