Zequenz Signature Collection – Hard Bound Soft White Cover Roll-Up Journal that has the unique, round 360 binding, which stands for all-round usability, flexibility, and durability. The outstanding difference to comparable products lies in the extraordinary binding technique of the spine: which means that the signature notebooks can be opened by a real 360 degrees and thereby ensure a high stability of the spine. It has 1000 GSM paper in Blank and 70 GSM paper in Squared version, smooth surface, acid free paper used for greater writing comfort. Best suited for ballpoint pens, fountain pen, and pencils.