Pencil Board Shitajiki for Traveler's Notebook Regular Size Made of thin 0.5mm plastic (slightly thinner than your credit card), so that you can have multiples in your leather cover without the heft. Perfect fit for your MTN **Regular Size** (4.33in x 8.25in) traveler's notebook Provides a flat and smooth writing surface Can be used as a bookmark or ruler. Measurements come in both centimeters and inches.