Notepad with waterproof paper, which does not become soggy even in heavy rain or when under water and can be written on with a standard pen or pencil. Ideal for outdoor activities, at work or in the field. Graph paper. 100 mm x 150 mm, 45 sheets. Size Large. 4" x 6". Waterproof pages with checkered lines. Spiral bound. Can be used in heavy rain or even under water. Ideal for military, police, firefighters, rescue workers, etc. Can be written on with standard pencil or ball point pen. 45 pages. Bulk packed.