This Clairefontaine 1951 notebook Black measures 5.75 x 8.5 inches, has a side cloth-bound binding and features 96 sheets of lined white 90g pH neutral acid-free paper. Clairefontaine 1951 notebooks come in assorted grained paper cover colors for a vintage look and feel, and the ultra-smooth satin finish makes this some of the best paper in the world for writing.