Rite in the Rain Weatherproof Hard Cover Notebook, 4.25" x 6.75", Yellow Cover, Universal Pattern (No. 370F-M) WEATHERPROOF PAPER: 160 pages / 80 sheets per notebook. This paper that wont turn to mush when wet and will repel water, sweat, grease, mud, and even survive the accidental laundry mishap and more. COVER / BINDING: Everything from the Fabrikoid cover, the paper, the sewn-in pages, even the glue is designed to survive Mother Nature's wrath. WHAT TO WRITE WITH: Use a Pencil or All-Weather Pen and your notes will stay intact. Standard Ballpoint pens will work when paper is dry. Water-based inks will bead off Rite in the Rain sheets. ADMISSIBLE: For legal defensibility, it is recommended that notebooks are perforated, numbered, and sewn-bound and will last several hundred years . RECYCLABILITY: In spite of Rite in the Rain's durability, it is completely recyclable. Simply recycle Rite in the Rain as you do other white or printed papers