The Rite In The Rain All-Weather Black Side Spiral Notebook is built to withstand the challenges of fieldwork. The notebook's Wire-O binding is impact-resistant and won't get out of shape when tossed in packs or pockets. The Polydura 19-gauge cover provides a sturdy but flexible outer shell to protect your notes from scratches and stains. The cover features printed rulers, conversion charts, and map scales to come in handy in the field.