Whatever the weather conditions, you can be assured that what you write down can be read later. The specialized waterproof paper prevents blurring in wet conditions. This 3 x 5 notebook fits in your vest pocket or your front coverall pocket. It contains 100 pages with a top spiral and a universal grid. The notebook is bright safety yellow so you can spot it on your workbench or in your toolbox. For best results, use the Rite in the Rain All Weather Pen (32312). USA made.