WEATHERPROOF PAPER: 100 pages / 50 sheets per notebook. All-weather paper wont turn to mush when wet and will repel water, sweat, grease, mud, and even survive the accidental laundry mishap. Make sure your pocket notebook stays RIGHT in the Rain. COVER / BINDING: Everything in this bound book is designed to survive Mother Nature's wrath. The Field-Flex cover, the Rite in the Rain Paper, and even the glue is weatherproof. 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. ARCHIVAL PAPER: Rite in the Rain's archival-grade paper resists stains, survives moisture, and lasts a lifetime in storage. 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.