WEATHERPROOF PAPER: 48 pages / 24 sheets per book. Each book comes with 16 pages of reference materials, map scales, and conversion tables. They won’t turn to mush when wet and will repel water, sweat, grease, mud, and even survive the accidental trip through the washing machine. Make sure your notebook stays RIGHT in the Rain. COVER MATERIAL: Field-Flex is Rite in the Rain's most flexible cover material. Mud and water run right off, protecting your field notes in adverse weather conditions. BINDING: Tough nickel-plated rust-resistant staples hold the notebook together and allow the notebook to lay flat. WRITE IN THE RAIN: When wet, use a standard #2 pencil or an all-weather pen. Standard ballpoints and permanent markers will work when paper is dry. Water-based inks will bead or wash off Rite in the Rain Paper. RECYCLABILITY: Unlike synthetic waterproof paper, wood-based Rite in the Rain is completely recyclable. Please recycle Rite in the Rain as you would other office printer paper.