Perfect for planning navigation or communicating to someone under the water or for just taking notes about the dive spot you are visiting. At the end of the day just clean it off and you can use it again and again.The leaves flip up for easy access. When you are done writing, an elastic cord helps snap the leaves back in place, and a special sleeve stows the attached carbon stick pencil. This wrist slate slides up and curves around your wetsuit- or drysuit-covered forearm. Two small elastic cords hold it firmly in place.