The All Weather Notebooks by Snugpak are a great addition to anyone's pack. Compose notes in wet weather conditions with a pencil or pen. The interior pages have both lines and grids (spaced in 1/8" lines vertically and horizontally). Also, on the inside of the back cover is an easy to read Conversion Chart for lengths, weights and temperatures. Can be used for writing in wet weather conditions with pen or pencil Pages lined on the front / Grid on reverse Conversion Chart Printed rulers for inches and centimeters Measures: 3" x 5"