Rite in the Rain's soft cover Field-Flex notebooks are tough, resilient, and flexible. Our weather-resistant and archival-grade paper resists stains, survives moisture, and lasts for a lifetime in storage. Our unique Field-Flex cover material lets mud and water roll right off, protecting your notes in adverse conditions. Field-Flex bends easily and then springs back into shape - they fit comfortably into a cramped field bag and won't be any worse for wear. If it's worth writing down, it's worth protecting on Rite in the Rain Paper - defending of your notes against the elements since 1916.