Rite in the Rain Weatherproof Hard Cover Notebook, 8.75" x 11.25", Black Cover, Universal Pattern (No. 770F-MX) Repels water, sweat, grease, and mud The cover, the paper, the sewn-in pages, even the glue is Designed to survive mother Nature's wrath. Use Pencil or all-weather pen (no gels or water-based inks) Archival quality paper and will last several hundred years Wood-based recyclable paper