Karst tree-free A5 Hardcover Notebook is made from high-quality, sustainable, and recyclable stone paper. With an expandable back pocket, divider ribbon or bookmark, elastic band, and lay-flat binding.   Item Description: 144 lined pages, lay flat binding, waterproof cover and pages, color matched elastic closure band and divider ribbon, back cover storage pocket.Materials: Cover: Rigid waterproof cover. Inside pages: Karst Stone paper recycled calcium carbonate / 120-micron thick paper (equivalent to 144gsm).Dimensions: 5.8” x 8.3” / Size A5