This tree-free A5 Hardcover Notebook by Karst Goods is made from high-quality, sustainable, and recyclable stone paper. This notebook contains an expandable back pocket for extra storage, a divider ribbon that doubles as a bookmark for easy reference, and lay-flat binding for comfortable writing! 

Specifications: 

Material: Cover: Rigid waterproof cover. Inside pages: Karst Stone paper recycled calcium carbonate / 120-micron thick paper (equivalent to 144gsm).

Overall Dimension: 5.8” x 8.3”