This is an Beta Series sketchbook by Stillman & Birn. The paper weight in the Beta Series is 180 Lb./270 GSM and it has a Natural White Rough Surface. Bright white, its enhanced wet strength makes it suitable for a variety of mixed media work.
Stillman & Birn is a line of premium sketchbooks based on a simple premise: When it comes to sketchbooks, paper matters. You will feel the quality of these high performance papers as soon as you open a book. Furthermore, the Stillman & Birn program offers a unique choice of paper weights, shades and surfaces, which allow the artist to use a wide range of dry and wet media.