These Rite In the Rain custom log sheets are designed to brave the elements in even the most extreme situations where geocaches are hidden. Rite in the Rain writing paper has been specially treated to be waterproof under most conditions. To read more about this process and the cool stories about this product, visit the Rite in the Rain web site. 4 log sheets are provided with each purchase. Each log sheet measures 1" wide by 11" long.