Dive X Multi-Page Wrist Slate is curved to fit comfortably on your wrist. If you have been night diving or in a low light situation & wanted to write something down you need 3-hands, One for your Slate, One for the Pencil and a Third for the Dive Light. The three-pages give you more than enough writing space to get your message-across. Slate is equipped with a velcro strap for mounting on the wrist, and the slate has a pencil that is attached to a coiled lanyard and a tube to secure the pencil when not in use.